diff --git a/CLAUDE.md b/CLAUDE.md index 9a7aef5..29f42ca 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -1,9 +1,9 @@ # pg_orrery — A Database Orrery for PostgreSQL ## What This Is -A database orrery — celestial mechanics types and functions for PostgreSQL. Native C extension using PGXS, 184 SQL objects (168 user-visible functions + 16 GiST support), 9 custom types, covering satellites (SGP4/SDP4), planets (VSOP87 + optional JPL DE441), Moon (ELP2000-82B), 19 planetary moons (L1.2/TASS17/GUST86/MarsSat), stars (with proper motion and annual parallax), comets, asteroids (MPC catalog), Jupiter radio bursts, interplanetary Lambert transfers, equatorial RA/Dec coordinates with GiST-indexed angular separation, atmospheric refraction, annual stellar aberration, light-time correction, rise/set prediction (geometric + refracted + event windows) with status diagnostics, IAU constellation identification with full name lookup (Roman 1987), twilight dawn/dusk (civil/nautical/astronomical), lunar phase (angle, illumination, name, age), planet apparent magnitude with Saturn ring correction (Mallama & Hilton 2018), solar elongation, planet phase fraction, satellite eclipse prediction (conical shadow with penumbra), observing night quality assessment, lunar optical libration (Meeus Ch. 53), and angular separation rate. +A database orrery — celestial mechanics types and functions for PostgreSQL. Native C extension using PGXS, 188 SQL objects (172 user-visible functions + 16 GiST support), 9 custom types, covering satellites (SGP4/SDP4), planets (VSOP87 + optional JPL DE441), Moon (ELP2000-82B), 19 planetary moons (L1.2/TASS17/GUST86/MarsSat), stars (with proper motion and annual parallax), comets, asteroids (MPC catalog), Jupiter radio bursts, interplanetary Lambert transfers, equatorial RA/Dec coordinates with GiST-indexed angular separation, atmospheric refraction, annual stellar aberration, light-time correction, rise/set prediction (geometric + refracted + event windows + sun almanac) with status diagnostics, IAU constellation identification with full name lookup (Roman 1987), twilight dawn/dusk (civil/nautical/astronomical), lunar phase (angle, illumination, name, age), planet apparent magnitude with Saturn ring correction (Mallama & Hilton 2018), solar elongation, planet phase fraction, conjunction detection, satellite eclipse prediction (conical shadow with penumbral fraction), observing night quality assessment, lunar libration (optical + physical, Meeus Ch. 53 + p. 373), and angular separation rate. -**Current version:** 0.18.0 +**Current version:** 0.19.0 **Repository:** https://git.supported.systems/warehack.ing/pg_orrery **Documentation:** https://pg-orrery.warehack.ing @@ -11,7 +11,7 @@ A database orrery — celestial mechanics types and functions for PostgreSQL. Na ```bash make PG_CONFIG=/usr/bin/pg_config # Compile with PGXS sudo make install PG_CONFIG=/usr/bin/pg_config # Install extension -make installcheck PG_CONFIG=/usr/bin/pg_config # Run 29 regression test suites +make installcheck PG_CONFIG=/usr/bin/pg_config # Run 30 regression test suites ``` Requires: PostgreSQL 17 development headers, GCC, Make. @@ -27,7 +27,7 @@ Image: `git.supported.systems/warehack.ing/pg_orrery:pg17` ## Project Layout ``` -pg_orrery.control # Extension metadata (version 0.18.0) +pg_orrery.control # Extension metadata (version 0.19.0) Makefile # PGXS build + Docker targets sql/ pg_orrery--0.1.0.sql # v0.1.0: satellite types/functions/operators @@ -48,6 +48,7 @@ sql/ pg_orrery--0.16.0.sql # v0.16.0: twilight, lunar phase, planet magnitude (162 objects) pg_orrery--0.17.0.sql # v0.17.0: elongation, phase, eclipse, night quality, libration (174 objects) pg_orrery--0.18.0.sql # v0.18.0: ring tilt, penumbral eclipse, rise/set windows, angular rate (184 objects) + pg_orrery--0.19.0.sql # v0.19.0: sun almanac, conjunctions, penumbral fraction, physical libration (188 objects) pg_orrery--0.1.0--0.2.0.sql # Migration: v0.1.0 → v0.2.0 (adds solar system) pg_orrery--0.2.0--0.3.0.sql # Migration: v0.2.0 → v0.3.0 (adds DE ephemeris) pg_orrery--0.3.0--0.4.0.sql # Migration: v0.3.0 → v0.4.0 @@ -65,6 +66,7 @@ sql/ pg_orrery--0.15.0--0.16.0.sql # Migration: v0.15.0 → v0.16.0 (twilight, lunar phase, planet magnitude) pg_orrery--0.16.0--0.17.0.sql # Migration: v0.16.0 → v0.17.0 (elongation, phase, eclipse, night quality, libration) pg_orrery--0.17.0--0.18.0.sql # Migration: v0.17.0 → v0.18.0 (ring tilt, penumbral eclipse, rise/set windows, angular rate) + pg_orrery--0.18.0--0.19.0.sql # Migration: v0.18.0 → v0.19.0 (sun almanac, conjunctions, penumbral fraction, physical libration) src/ pg_orrery.c # PG_MODULE_MAGIC + _PG_init() (GUC registration) types.h # All struct definitions + constants + DE body ID mapping @@ -89,15 +91,15 @@ src/ kepler_funcs.c # kepler_propagate(), comet_observe() kepler.h # Shared Kepler solver interface (kepler_position()) orbital_elements_type.c # orbital_elements type, MPC parser, small_body_observe/equatorial/apparent() - equatorial_funcs.c # equatorial type I/O, accessors, satellite/planet/sun/moon RA/Dec, angular rate + equatorial_funcs.c # equatorial type I/O, accessors, satellite/planet/sun/moon RA/Dec, angular rate, conjunction detection refraction_funcs.c # atmospheric_refraction(), _ext(), topo_elevation_apparent() - rise_set_funcs.c # planet/sun/moon rise/set (geometric + refracted) + twilight dawn/dusk + event window SRFs + rise_set_funcs.c # planet/sun/moon rise/set (geometric + refracted) + twilight dawn/dusk + event window SRFs + sun almanac constellation_data.h / .c # Roman (1987) IAU boundary table (CDS VI/42, 357 segments) constellation_funcs.c # constellation() from equatorial or RA/Dec lunar_phase_funcs.c # moon_phase_angle(), moon_illumination(), moon_phase_name(), moon_age() magnitude_funcs.c # planet_magnitude() (with Saturn ring correction), solar_elongation(), planet_phase(), saturn_ring_tilt() - eclipse_funcs.c # satellite eclipse prediction (conical shadow with penumbra, Vallado §5.3) - libration.h / libration_funcs.c # lunar optical libration (Meeus Ch. 53) + eclipse_funcs.c # satellite eclipse prediction (conical shadow with penumbral fraction, Vallado §5.3) + libration.h / libration_funcs.c # lunar libration (optical Meeus Ch. 53 + physical p. 373) l12.c / l12.h # L1.2 Galilean moon theory (Lieske 1998) tass17.c / tass17.h # TASS 1.7 Saturn moon theory (Vienne & Duriez 1995) gust86.c / gust86.h # GUST86 Uranus moon theory (Laskar & Jacobson 1987) @@ -122,7 +124,7 @@ src/ PROVENANCE.md # Vendoring decision, modifications, verification LICENSE # MIT license (Bill Gray / Project Pluto) test/ - sql/ # 29 regression test suites + sql/ # 30 regression test suites expected/ # Expected output data/vallado_518.json # 518 Vallado test vectors (AIAA 2006-6753-Rev1) docs/ @@ -149,7 +151,7 @@ All types are fixed-size, `STORAGE = plain`, `ALIGNMENT = double`. No TOAST over | `orbital_elements` | 72 | Classical Keplerian elements for comets/asteroids (epoch, q, e, inc, omega, Omega, tp, H, G) | | `equatorial` | 24 | Apparent RA (hours), Dec (degrees), distance (km) — of date | -## Function Domains (184 SQL objects) +## Function Domains (188 SQL objects) | Domain | Theory | Key Functions | Count | |--------|--------|---------------|-------| @@ -161,20 +163,21 @@ All types are fixed-size, `STORAGE = plain`, `ALIGNMENT = double`. No TOAST over | Comets/asteroids | Two-body Keplerian + MPC | `small_body_observe()`, `small_body_equatorial()`, `oe_from_mpc()` | 19 | | Refraction | Bennett (1982) | `atmospheric_refraction()`, `predict_passes_refracted()` | 4 | | Equatorial spatial | Vincenty formula | `eq_angular_distance()`, `eq_within_cone()`, `eq_angular_rate()`, `<->` | 4 | +| Conjunction detection | VSOP87/ELP2000-82B + ternary search | `planet_conjunctions()` | 1 | | Jupiter radio | Carr et al. (1983) | `jupiter_burst_probability()` | 3 | | Transfers | Lambert (Izzo 2015) | `lambert_transfer()`, `lambert_c3()` | 2 | | DE ephemeris | JPL DE440/441 (optional) | `planet_observe_de()`, `*_equatorial_de()`, `*_apparent_de()` | 23 | | GiST index (TLE) | Altitude-band approximation | `&&` (overlap), `<->` (distance) | 8 | | GiST index (equatorial) | Spherical bounding box | `<->` (KNN ordering) | 8 | -| Rise/set | Bisection (60s scan) | `planet_next_rise()`, `sun_next_rise_refracted()`, `*_rise_set_status()`, `*_rise_set_events()` | 18 | +| Rise/set | Bisection (60s scan) | `planet_next_rise()`, `sun_next_rise_refracted()`, `*_rise_set_status()`, `*_rise_set_events()`, `sun_almanac_events()` | 19 | | Twilight | Sun depression angles | `sun_civil_dawn()`, `sun_nautical_dusk()`, `sun_astronomical_dawn()` | 6 | | Lunar phase | VSOP87 + ELP2000-82B geometry | `moon_phase_angle()`, `moon_illumination()`, `moon_phase_name()`, `moon_age()` | 4 | | Planet magnitude | Mallama & Hilton (2018) | `planet_magnitude()`, `saturn_ring_tilt()` | 2 | | Solar elongation | VSOP87 geometry | `solar_elongation()` | 1 | | Planet phase | VSOP87 geometry | `planet_phase()` | 1 | -| Satellite eclipse | Conical shadow (Vallado §5.3) | `satellite_is_eclipsed()`, `satellite_next_eclipse_entry()`, `satellite_shadow_state()`, `satellite_in_penumbra()` | 8 | +| Satellite eclipse | Conical shadow (Vallado §5.3) | `satellite_is_eclipsed()`, `satellite_next_eclipse_entry()`, `satellite_shadow_state()`, `satellite_penumbral_fraction()` | 9 | | Observing quality | Composite (twilight+Moon) | `observing_night_quality()` | 1 | -| Lunar libration | Meeus (1998) Ch. 53 | `moon_libration_longitude()`, `moon_libration()`, `moon_subsolar_longitude()` | 5 | +| Lunar libration | Meeus (1998) Ch. 53 + p. 373 | `moon_libration_longitude()`, `moon_libration()`, `moon_subsolar_longitude()`, `moon_physical_libration()` | 6 | | Constellation | Roman (1987) CDS VI/42 | `constellation()`, `constellation_full_name()` | 3 | | Diagnostics | -- | `pg_orrery_ephemeris_info()` | 1 | @@ -309,7 +312,7 @@ All numerical logic is byte-identical to upstream. Verified against 518 Vallado ## Testing -29 regression test suites via `make installcheck`: +30 regression test suites via `make installcheck`: | Suite | What it tests | |-------|--------------| @@ -342,10 +345,11 @@ All numerical logic is byte-identical to upstream. Verified against 518 Vallado | v016_features | Twilight ordering/offset/polar, lunar phase at known events, planet magnitude ranges/errors | | v017_features | Solar elongation ranges/errors, planet phase ranges, satellite eclipse, observing night quality, lunar libration ranges, subsolar longitude | | v018_features | Saturn ring tilt range/variation, penumbral eclipse (shadow state, penumbra precedes umbra), rise/set event windows (Sun/Moon/planet, refracted vs geometric), angular separation rate (generic + planet convenience) | +| v019_features | Sun almanac events (count/order/types/polar/refraction/window guard), conjunction detection (Jupiter-Saturn 2020, Moon-Venus, same-body error, threshold filter), penumbral fraction (range/bounds/eclipse consistency), physical libration (small corrections, time variation, total libration range) | ### PG Version Matrix -Test all 29 regression suites + DE reader unit test across PostgreSQL 14-18 using Docker: +Test all 30 regression suites + DE reader unit test across PostgreSQL 14-18 using Docker: ```bash make test-matrix # Full matrix (PG 14-18) @@ -363,7 +367,7 @@ Logs saved to `test/matrix-logs/pg${ver}.log`. The script reuses the Dockerfile - `_safe()` variants (`sgp4_propagate_safe`, `observe_safe`, `star_observe_safe`) return NULL on error instead of raising exceptions. Use these for batch queries over potentially invalid data. - SGP4 error codes: -1 (nearly parabolic), -2 (negative semi-major axis/decayed), -3/-4 (orbit within Earth, returns with NOTICE), -5 (negative mean motion), -6 (convergence failure) - Pass prediction: propagation failures return -pi elevation (below horizon), shedding the failed timestep without aborting the scan. -- Input validation: same-body Lambert check, arrival-before-departure, invalid body_id, RA out of [0,24), negative perihelion distance. +- Input validation: same-body Lambert check, same-body conjunction check, arrival-before-departure, invalid body_id, RA out of [0,24), negative perihelion distance, almanac/conjunction window overflow. ## Documentation Site @@ -371,7 +375,7 @@ Logs saved to `test/matrix-logs/pg${ver}.log`. The script reuses the Dockerfile Starlight docs at `docs/` — 44+ MDX pages covering all domains. -Sections: Getting Started, Guides (9 domain walkthroughs incl. DE ephemeris), Workflow Translation (Skyfield/Horizons/GMAT/Radio Jupiter Pro comparisons), Reference (all 184 SQL objects incl. DE variants, equatorial GiST, refraction, rise/set, constellation, twilight, lunar phase, planet magnitude, Saturn ring tilt, solar elongation, planet phase, satellite eclipse with penumbra, observing quality, lunar libration, angular separation rate), Architecture (Hamilton's principles, constant custody, observation pipeline), Performance (benchmarks). +Sections: Getting Started, Guides (9 domain walkthroughs incl. DE ephemeris), Workflow Translation (Skyfield/Horizons/GMAT/Radio Jupiter Pro comparisons), Reference (all 188 SQL objects incl. DE variants, equatorial GiST, refraction, rise/set, sun almanac, conjunction detection, constellation, twilight, lunar phase, planet magnitude, Saturn ring tilt, solar elongation, planet phase, satellite eclipse with penumbral fraction, observing quality, lunar libration with physical corrections, angular separation rate), Architecture (Hamilton's principles, constant custody, observation pipeline), Performance (benchmarks). ### Local Development ```bash diff --git a/Makefile b/Makefile index c78d4e5..b3d52cc 100644 --- a/Makefile +++ b/Makefile @@ -16,7 +16,8 @@ DATA = sql/pg_orrery--0.1.0.sql sql/pg_orrery--0.2.0.sql sql/pg_orrery--0.1.0--0 sql/pg_orrery--0.15.0.sql sql/pg_orrery--0.14.0--0.15.0.sql \ sql/pg_orrery--0.16.0.sql sql/pg_orrery--0.15.0--0.16.0.sql \ sql/pg_orrery--0.17.0.sql sql/pg_orrery--0.16.0--0.17.0.sql \ - sql/pg_orrery--0.18.0.sql sql/pg_orrery--0.17.0--0.18.0.sql + sql/pg_orrery--0.18.0.sql sql/pg_orrery--0.17.0--0.18.0.sql \ + sql/pg_orrery--0.19.0.sql sql/pg_orrery--0.18.0--0.19.0.sql # Our extension C sources OBJS = src/pg_orrery.o src/tle_type.o src/eci_type.o src/observer_type.o \ @@ -60,7 +61,8 @@ REGRESS = tle_parse sgp4_propagate coord_transforms pass_prediction gist_index c v015_features \ v016_features \ v017_features \ - v018_features + v018_features \ + v019_features REGRESS_OPTS = --inputdir=test # Pure C — no C++ runtime needed. LAPACK for OD solver (dgelss_). diff --git a/pg_orrery.control b/pg_orrery.control index ee1bcac..d6aed22 100644 --- a/pg_orrery.control +++ b/pg_orrery.control @@ -1,4 +1,4 @@ comment = 'A database orrery — celestial mechanics types and functions for PostgreSQL' -default_version = '0.18.0' +default_version = '0.19.0' module_pathname = '$libdir/pg_orrery' relocatable = true diff --git a/sql/pg_orrery--0.18.0--0.19.0.sql b/sql/pg_orrery--0.18.0--0.19.0.sql new file mode 100644 index 0000000..e966a37 --- /dev/null +++ b/sql/pg_orrery--0.18.0--0.19.0.sql @@ -0,0 +1,53 @@ +-- pg_orrery 0.18.0 -> 0.19.0: Sun almanac SRF, conjunction detection, +-- penumbral fraction, physical libration + +-- ============================================================ +-- Sun almanac events SRF (1) +-- ============================================================ + +CREATE FUNCTION sun_almanac_events( + observer, start timestamptz, stop timestamptz, + refracted bool DEFAULT false +) RETURNS TABLE(event_time timestamptz, event_type text) + AS 'MODULE_PATHNAME', 'sun_almanac_events' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 50; +COMMENT ON FUNCTION sun_almanac_events(observer, timestamptz, timestamptz, bool) IS + 'All Sun events (rise, set, civil/nautical/astronomical dawn and dusk) within a time window, sorted chronologically. Replaces chained individual twilight queries. Max 366-day window.'; + +-- ============================================================ +-- Conjunction detection SRF (1) +-- ============================================================ + +CREATE FUNCTION planet_conjunctions( + int4, int4, timestamptz, timestamptz, + max_separation float8 DEFAULT 10.0 +) RETURNS TABLE(conjunction_time timestamptz, separation_deg float8) + AS 'MODULE_PATHNAME', 'planet_conjunctions' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION planet_conjunctions(int4, int4, timestamptz, timestamptz, float8) IS + 'Finds conjunctions (angular separation minima) between two solar system bodies. Body IDs: 0=Sun, 1-8=planets, 10=Moon. max_separation filters results (degrees, default 10). Max 3660-day (10-year) window.'; + +-- ============================================================ +-- Penumbral fraction (1) +-- ============================================================ + +CREATE FUNCTION satellite_penumbral_fraction(tle, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'satellite_penumbral_fraction' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_penumbral_fraction(tle, timestamptz) IS + 'Continuous shadow depth: 0.0 = full sunlight, 1.0 = full umbra. Linear interpolation in penumbral zone.'; + +-- ============================================================ +-- Physical libration (1) +-- ============================================================ + +CREATE FUNCTION moon_physical_libration( + timestamptz, + OUT tau float8, OUT rho float8 +) RETURNS record + AS 'MODULE_PATHNAME', 'moon_physical_libration' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_physical_libration(timestamptz) IS + 'Physical libration corrections (Meeus p. 373): tau = longitude correction, rho = latitude correction (both in degrees, typically |value| < 0.1).'; diff --git a/sql/pg_orrery--0.19.0.sql b/sql/pg_orrery--0.19.0.sql new file mode 100644 index 0000000..21917a3 --- /dev/null +++ b/sql/pg_orrery--0.19.0.sql @@ -0,0 +1,1958 @@ +-- pg_orrery -- Orbital mechanics types and functions for PostgreSQL +-- +-- Types: tle, eci_position, geodetic, topocentric, observer, pass_event +-- Provides SGP4/SDP4 propagation, coordinate transforms, pass prediction, +-- and GiST indexing on altitude bands for conjunction screening. +-- +-- All propagation uses WGS-72 constants (matching TLE mean element fitting). +-- Coordinate output uses WGS-84 (matching modern geodetic standards). + +-- ============================================================ +-- Shell types (forward declarations) +-- ============================================================ + +CREATE TYPE tle; +CREATE TYPE eci_position; +CREATE TYPE geodetic; +CREATE TYPE topocentric; +CREATE TYPE observer; +CREATE TYPE pass_event; + + +-- ============================================================ +-- TLE type: Two-Line Element set +-- ============================================================ + +CREATE FUNCTION tle_in(cstring) RETURNS tle + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION tle_out(tle) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION tle_recv(internal) RETURNS tle + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION tle_send(tle) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE tle ( + INPUT = tle_in, + OUTPUT = tle_out, + RECEIVE = tle_recv, + SEND = tle_send, + INTERNALLENGTH = 112, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE tle IS 'Two-Line Element set — parsed mean orbital elements for SGP4/SDP4 propagation'; + +-- TLE accessor functions + +CREATE FUNCTION tle_epoch(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_epoch(tle) IS 'TLE epoch as Julian date (UTC)'; + +CREATE FUNCTION tle_norad_id(tle) RETURNS int4 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_norad_id(tle) IS 'NORAD catalog number'; + +CREATE FUNCTION tle_inclination(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_inclination(tle) IS 'Orbital inclination in degrees'; + +CREATE FUNCTION tle_eccentricity(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_eccentricity(tle) IS 'Orbital eccentricity (dimensionless)'; + +CREATE FUNCTION tle_raan(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_raan(tle) IS 'Right ascension of ascending node in degrees'; + +CREATE FUNCTION tle_arg_perigee(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_arg_perigee(tle) IS 'Argument of perigee in degrees'; + +CREATE FUNCTION tle_mean_anomaly(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_mean_anomaly(tle) IS 'Mean anomaly in degrees'; + +CREATE FUNCTION tle_mean_motion(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_mean_motion(tle) IS 'Mean motion in revolutions per day'; + +CREATE FUNCTION tle_bstar(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_bstar(tle) IS 'B* drag coefficient (1/earth-radii)'; + +CREATE FUNCTION tle_period(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_period(tle) IS 'Orbital period in minutes'; + +CREATE FUNCTION tle_age(tle, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_age(tle, timestamptz) IS 'TLE age in days (positive = past epoch, negative = before epoch)'; + +CREATE FUNCTION tle_perigee(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_perigee(tle) IS 'Perigee altitude in km above WGS-72 ellipsoid'; + +CREATE FUNCTION tle_apogee(tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_apogee(tle) IS 'Apogee altitude in km above WGS-72 ellipsoid'; + +CREATE FUNCTION tle_intl_desig(tle) RETURNS text + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_intl_desig(tle) IS 'International designator (COSPAR ID)'; + +CREATE FUNCTION tle_from_lines(text, text) RETURNS tle + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_lines(text, text) IS + 'Construct TLE from separate line1/line2 text columns'; + + +-- ============================================================ +-- ECI position type: True Equator Mean Equinox (TEME) frame +-- ============================================================ + +CREATE FUNCTION eci_in(cstring) RETURNS eci_position + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_out(eci_position) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_recv(internal) RETURNS eci_position + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_send(eci_position) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE eci_position ( + INPUT = eci_in, + OUTPUT = eci_out, + RECEIVE = eci_recv, + SEND = eci_send, + INTERNALLENGTH = 48, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE eci_position IS 'Earth-Centered Inertial position and velocity in TEME frame (km, km/s)'; + +-- ECI accessor functions + +CREATE FUNCTION eci_x(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_y(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_z(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_vx(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_vy(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_vz(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION eci_speed(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_speed(eci_position) IS 'Velocity magnitude in km/s'; + +CREATE FUNCTION eci_altitude(eci_position) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_altitude(eci_position) IS 'Approximate geocentric altitude in km (radius - WGS72_AE)'; + + +-- ============================================================ +-- Geodetic type: WGS-84 latitude/longitude/altitude +-- ============================================================ + +CREATE FUNCTION geodetic_in(cstring) RETURNS geodetic + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION geodetic_out(geodetic) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION geodetic_recv(internal) RETURNS geodetic + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION geodetic_send(geodetic) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE geodetic ( + INPUT = geodetic_in, + OUTPUT = geodetic_out, + RECEIVE = geodetic_recv, + SEND = geodetic_send, + INTERNALLENGTH = 24, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE geodetic IS 'Geodetic coordinates on WGS-84 ellipsoid (lat/lon in degrees, altitude in km)'; + +CREATE FUNCTION geodetic_lat(geodetic) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION geodetic_lon(geodetic) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION geodetic_alt(geodetic) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + + +-- ============================================================ +-- Topocentric type: observer-relative az/el/range +-- ============================================================ + +CREATE FUNCTION topocentric_in(cstring) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION topocentric_out(topocentric) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION topocentric_recv(internal) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION topocentric_send(topocentric) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE topocentric ( + INPUT = topocentric_in, + OUTPUT = topocentric_out, + RECEIVE = topocentric_recv, + SEND = topocentric_send, + INTERNALLENGTH = 32, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE topocentric IS 'Topocentric coordinates relative to observer (azimuth, elevation, range, range rate)'; + +CREATE FUNCTION topo_azimuth(topocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION topo_azimuth(topocentric) IS 'Azimuth in degrees (0=N, 90=E, 180=S, 270=W)'; + +CREATE FUNCTION topo_elevation(topocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION topo_elevation(topocentric) IS 'Elevation in degrees (0=horizon, 90=zenith)'; + +CREATE FUNCTION topo_range(topocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION topo_range(topocentric) IS 'Slant range in km'; + +CREATE FUNCTION topo_range_rate(topocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION topo_range_rate(topocentric) IS 'Range rate in km/s (positive = receding)'; + + +-- ============================================================ +-- Observer type: ground station location +-- ============================================================ + +CREATE FUNCTION observer_in(cstring) RETURNS observer + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION observer_out(observer) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION observer_recv(internal) RETURNS observer + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION observer_send(observer) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE observer ( + INPUT = observer_in, + OUTPUT = observer_out, + RECEIVE = observer_recv, + SEND = observer_send, + INTERNALLENGTH = 24, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE observer IS 'Ground observer location (accepts: 40.0N 105.3W 1655m or decimal degrees)'; + +CREATE FUNCTION observer_lat(observer) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observer_lat(observer) IS 'Latitude in degrees (positive = North)'; + +CREATE FUNCTION observer_lon(observer) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observer_lon(observer) IS 'Longitude in degrees (positive = East)'; + +CREATE FUNCTION observer_alt(observer) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observer_alt(observer) IS 'Altitude in meters above WGS-84 ellipsoid'; + +CREATE FUNCTION observer_from_geodetic(float8, float8, float8 DEFAULT 0.0) RETURNS observer + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observer_from_geodetic(float8, float8, float8) IS + 'Construct observer from lat (deg), lon (deg), altitude (meters). Avoids text formatting round-trips.'; + + +-- ============================================================ +-- Pass event type: satellite visibility window +-- ============================================================ + +CREATE FUNCTION pass_event_in(cstring) RETURNS pass_event + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION pass_event_out(pass_event) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION pass_event_recv(internal) RETURNS pass_event + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION pass_event_send(pass_event) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE pass_event ( + INPUT = pass_event_in, + OUTPUT = pass_event_out, + RECEIVE = pass_event_recv, + SEND = pass_event_send, + INTERNALLENGTH = 48, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE pass_event IS 'Satellite pass event (AOS/MAX/LOS times, max elevation, AOS/LOS azimuths)'; + +CREATE FUNCTION pass_aos_time(pass_event) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_aos_time(pass_event) IS 'Acquisition of signal time'; + +CREATE FUNCTION pass_max_el_time(pass_event) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_max_el_time(pass_event) IS 'Maximum elevation time'; + +CREATE FUNCTION pass_los_time(pass_event) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_los_time(pass_event) IS 'Loss of signal time'; + +CREATE FUNCTION pass_max_elevation(pass_event) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_max_elevation(pass_event) IS 'Maximum elevation in degrees'; + +CREATE FUNCTION pass_aos_azimuth(pass_event) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_aos_azimuth(pass_event) IS 'AOS azimuth in degrees (0=N)'; + +CREATE FUNCTION pass_los_azimuth(pass_event) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_los_azimuth(pass_event) IS 'LOS azimuth in degrees (0=N)'; + +CREATE FUNCTION pass_duration(pass_event) RETURNS interval + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_duration(pass_event) IS 'Pass duration (LOS - AOS)'; + + +-- ============================================================ +-- SGP4/SDP4 propagation functions +-- ============================================================ + +CREATE FUNCTION sgp4_propagate(tle, timestamptz) RETURNS eci_position + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sgp4_propagate(tle, timestamptz) IS + 'Propagate TLE to a point in time using SGP4 (near-earth) or SDP4 (deep-space). Returns TEME ECI position/velocity.'; + +CREATE FUNCTION sgp4_propagate_safe(tle, timestamptz) RETURNS eci_position + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE PARALLEL SAFE; +COMMENT ON FUNCTION sgp4_propagate_safe(tle, timestamptz) IS + 'Like sgp4_propagate but returns NULL on error instead of raising an exception. For batch queries with potentially invalid TLEs.'; + +CREATE FUNCTION sgp4_propagate_series(tle, timestamptz, timestamptz, interval) + RETURNS TABLE(t timestamptz, x float8, y float8, z float8, vx float8, vy float8, vz float8) + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE + ROWS 100; +COMMENT ON FUNCTION sgp4_propagate_series(tle, timestamptz, timestamptz, interval) IS + 'Propagate TLE over a time range at regular intervals. Returns time series of TEME positions.'; + +CREATE FUNCTION tle_distance(tle, tle, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_distance(tle, tle, timestamptz) IS + 'Euclidean distance in km between two TLEs at a reference time'; + + +-- ============================================================ +-- Coordinate transform functions +-- ============================================================ + +CREATE FUNCTION eci_to_geodetic(eci_position, timestamptz) RETURNS geodetic + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_to_geodetic(eci_position, timestamptz) IS + 'Convert TEME ECI position to WGS-84 geodetic coordinates at given time'; + +CREATE FUNCTION eci_to_topocentric(eci_position, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_to_topocentric(eci_position, observer, timestamptz) IS + 'Convert TEME ECI position to topocentric (az/el/range) relative to observer'; + +CREATE FUNCTION subsatellite_point(tle, timestamptz) RETURNS geodetic + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION subsatellite_point(tle, timestamptz) IS + 'Subsatellite (nadir) point on WGS-84 ellipsoid at given time'; + +CREATE FUNCTION ground_track(tle, timestamptz, timestamptz, interval) + RETURNS TABLE(t timestamptz, lat float8, lon float8, alt float8) + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE + ROWS 100; +COMMENT ON FUNCTION ground_track(tle, timestamptz, timestamptz, interval) IS + 'Ground track as time series of subsatellite points (lat/lon in degrees, alt in km)'; + +CREATE FUNCTION observe(tle, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observe(tle, observer, timestamptz) IS + 'Propagate TLE and compute observer-relative look angles in one call. Returns topocentric (az/el/range/range_rate).'; + +CREATE FUNCTION observe_safe(tle, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE PARALLEL SAFE; +COMMENT ON FUNCTION observe_safe(tle, observer, timestamptz) IS + 'Like observe() but returns NULL on propagation error. For batch queries with potentially invalid/decayed TLEs.'; + + +-- ============================================================ +-- Pass prediction functions +-- ============================================================ + +CREATE FUNCTION next_pass(tle, observer, timestamptz) RETURNS pass_event + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION next_pass(tle, observer, timestamptz) IS + 'Find the next satellite pass over observer (searches up to 7 days ahead)'; + +CREATE FUNCTION predict_passes(tle, observer, timestamptz, timestamptz, float8 DEFAULT 0.0) + RETURNS SETOF pass_event + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION predict_passes(tle, observer, timestamptz, timestamptz, float8) IS + 'Predict all satellite passes over observer in time window. Optional min_elevation in degrees.'; + +CREATE FUNCTION pass_visible(tle, observer, timestamptz, timestamptz) RETURNS boolean + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION pass_visible(tle, observer, timestamptz, timestamptz) IS + 'True if any pass occurs over observer in the time window'; + + +-- ============================================================ +-- GiST operator support functions +-- ============================================================ + +-- Overlap operator: do orbital keys overlap in altitude AND inclination? +CREATE FUNCTION tle_overlap(tle, tle) RETURNS boolean + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +-- Altitude distance operator (altitude-only, for KNN ordering) +CREATE FUNCTION tle_alt_distance(tle, tle) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE OPERATOR && ( + LEFTARG = tle, + RIGHTARG = tle, + FUNCTION = tle_overlap, + COMMUTATOR = &&, + RESTRICT = areasel, + JOIN = areajoinsel +); + +COMMENT ON OPERATOR && (tle, tle) IS 'Orbital key overlap (altitude band AND inclination range) — necessary condition for conjunction'; + +CREATE OPERATOR <-> ( + LEFTARG = tle, + RIGHTARG = tle, + FUNCTION = tle_alt_distance, + COMMUTATOR = <-> +); + +COMMENT ON OPERATOR <-> (tle, tle) IS '2-D orbital distance in km: L2 norm of altitude-band gap and inclination gap (radians × Earth radius). Returns 0 when both dimensions overlap.'; + + +-- ============================================================ +-- GiST operator class for 2-D orbital indexing (altitude + inclination) +-- ============================================================ + +-- GiST internal support functions +CREATE FUNCTION gist_tle_compress(internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_decompress(internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_consistent(internal, tle, smallint, oid, internal) RETURNS boolean + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_union(internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_penalty(internal, internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_picksplit(internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_same(internal, internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_tle_distance(internal, tle, smallint, oid, internal) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE OPERATOR CLASS tle_ops + DEFAULT FOR TYPE tle USING gist AS + OPERATOR 3 && , + OPERATOR 15 <-> (tle, tle) FOR ORDER BY float_ops, + FUNCTION 1 gist_tle_consistent(internal, tle, smallint, oid, internal), + FUNCTION 2 gist_tle_union(internal, internal), + FUNCTION 3 gist_tle_compress(internal), + FUNCTION 4 gist_tle_decompress(internal), + FUNCTION 5 gist_tle_penalty(internal, internal, internal), + FUNCTION 6 gist_tle_picksplit(internal, internal), + FUNCTION 7 gist_tle_same(internal, internal, internal), + FUNCTION 8 gist_tle_distance(internal, tle, smallint, oid, internal); + + +-- ============================================================ +-- Heliocentric type: ecliptic J2000 position in AU +-- ============================================================ + +CREATE TYPE heliocentric; + +CREATE FUNCTION heliocentric_in(cstring) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION heliocentric_out(heliocentric) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION heliocentric_recv(internal) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION heliocentric_send(heliocentric) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE heliocentric ( + INPUT = heliocentric_in, + OUTPUT = heliocentric_out, + RECEIVE = heliocentric_recv, + SEND = heliocentric_send, + INTERNALLENGTH = 24, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE heliocentric IS 'Heliocentric position in ecliptic J2000 frame (x, y, z in AU)'; + +CREATE FUNCTION helio_x(heliocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION helio_x(heliocentric) IS 'X component in AU (ecliptic J2000, vernal equinox direction)'; + +CREATE FUNCTION helio_y(heliocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION helio_y(heliocentric) IS 'Y component in AU (ecliptic J2000)'; + +CREATE FUNCTION helio_z(heliocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION helio_z(heliocentric) IS 'Z component in AU (ecliptic J2000, north ecliptic pole)'; + +CREATE FUNCTION helio_distance(heliocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION helio_distance(heliocentric) IS 'Heliocentric distance in AU'; + + +-- ============================================================ +-- Star observation functions +-- ============================================================ + +CREATE FUNCTION star_observe(float8, float8, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION star_observe(float8, float8, observer, timestamptz) IS + 'Observe a star from (ra_hours J2000, dec_degrees J2000, observer, time). Returns topocentric az/el. Range is 0 (infinite distance).'; + +CREATE FUNCTION star_observe_safe(float8, float8, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE PARALLEL SAFE; +COMMENT ON FUNCTION star_observe_safe(float8, float8, observer, timestamptz) IS + 'Like star_observe but returns NULL on invalid inputs. For batch queries over star catalogs.'; + + +-- ============================================================ +-- Keplerian propagation functions +-- ============================================================ + +CREATE FUNCTION kepler_propagate( + q_au float8, eccentricity float8, + inclination_deg float8, arg_perihelion_deg float8, + long_asc_node_deg float8, perihelion_jd float8, + t timestamptz +) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION kepler_propagate(float8, float8, float8, float8, float8, float8, timestamptz) IS + 'Two-body Keplerian propagation from classical orbital elements. Returns heliocentric ecliptic J2000 position in AU. Handles elliptic, parabolic, and hyperbolic orbits.'; + + +-- ============================================================ +-- Comet observation +-- ============================================================ + +CREATE FUNCTION comet_observe( + q_au float8, eccentricity float8, + inclination_deg float8, arg_perihelion_deg float8, + long_asc_node_deg float8, perihelion_jd float8, + earth_x_au float8, earth_y_au float8, earth_z_au float8, + obs observer, t timestamptz +) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION comet_observe(float8, float8, float8, float8, float8, float8, float8, float8, float8, observer, timestamptz) IS + 'Observe a comet/asteroid from orbital elements. Requires Earth heliocentric ecliptic J2000 position (AU). Returns topocentric az/el with geocentric range in km.'; + + +-- ============================================================ +-- VSOP87 planets, ELP82B Moon, Sun observation +-- ============================================================ + +CREATE FUNCTION planet_heliocentric(int4, timestamptz) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_heliocentric(int4, timestamptz) IS + 'VSOP87 heliocentric ecliptic J2000 position (AU). Body IDs: 0=Sun, 1=Mercury, ..., 8=Neptune.'; + +CREATE FUNCTION planet_observe(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_observe(int4, observer, timestamptz) IS + 'Observe a planet from (body_id 1-8, observer, time). Returns topocentric az/el with geocentric range in km.'; + +CREATE FUNCTION sun_observe(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_observe(observer, timestamptz) IS + 'Observe the Sun from (observer, time). Returns topocentric az/el with geocentric range in km.'; + +CREATE FUNCTION moon_observe(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_observe(observer, timestamptz) IS + 'Observe the Moon via ELP2000-82B from (observer, time). Returns topocentric az/el with geocentric range in km.'; + + +-- ============================================================ +-- Planetary moon observation +-- ============================================================ + +CREATE FUNCTION galilean_observe(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION galilean_observe(int4, observer, timestamptz) IS + 'Observe a Galilean moon of Jupiter via L1.2 theory. Body IDs: 0=Io, 1=Europa, 2=Ganymede, 3=Callisto.'; + +CREATE FUNCTION saturn_moon_observe(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION saturn_moon_observe(int4, observer, timestamptz) IS + 'Observe a Saturn moon via TASS 1.7. Body IDs: 0=Mimas, 1=Enceladus, 2=Tethys, 3=Dione, 4=Rhea, 5=Titan, 6=Iapetus, 7=Hyperion.'; + +CREATE FUNCTION uranus_moon_observe(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION uranus_moon_observe(int4, observer, timestamptz) IS + 'Observe a Uranus moon via GUST86. Body IDs: 0=Miranda, 1=Ariel, 2=Umbriel, 3=Titania, 4=Oberon.'; + +CREATE FUNCTION mars_moon_observe(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION mars_moon_observe(int4, observer, timestamptz) IS + 'Observe a Mars moon via MarsSat. Body IDs: 0=Phobos, 1=Deimos.'; + + +-- ============================================================ +-- Jupiter decametric radio burst prediction +-- ============================================================ + +CREATE FUNCTION io_phase_angle(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION io_phase_angle(timestamptz) IS + 'Io orbital phase angle in degrees [0,360). 0=superior conjunction (behind Jupiter). Standard Radio JOVE convention.'; + +CREATE FUNCTION jupiter_cml(observer, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION jupiter_cml(observer, timestamptz) IS + 'Jupiter Central Meridian Longitude, System III (1965.0), in degrees [0,360). Light-time corrected.'; + +CREATE FUNCTION jupiter_burst_probability(float8, float8) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION jupiter_burst_probability(float8, float8) IS + 'Estimated Jupiter decametric burst probability (0-1) from (io_phase_deg, cml_deg). Based on Carr et al. (1983) source regions A, B, C, D.'; + + +-- ============================================================ +-- Interplanetary transfer orbits (Lambert solver) +-- ============================================================ + +CREATE FUNCTION lambert_transfer( + dep_body_id int4, arr_body_id int4, + dep_time timestamptz, arr_time timestamptz, + OUT c3_departure float8, OUT c3_arrival float8, + OUT v_inf_departure float8, OUT v_inf_arrival float8, + OUT tof_days float8, OUT transfer_sma float8 +) RETURNS RECORD + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION lambert_transfer(int4, int4, timestamptz, timestamptz) IS + 'Solve Lambert transfer between two planets. Returns C3 (km^2/s^2), v_infinity (km/s), TOF (days), SMA (AU). Body IDs 1-8.'; + +CREATE FUNCTION lambert_c3(int4, int4, timestamptz, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION lambert_c3(int4, int4, timestamptz, timestamptz) IS + 'Departure C3 (km^2/s^2) for a Lambert transfer. Returns NULL if solver fails. For pork chop plots.'; + + +-- ============================================================ +-- DE ephemeris functions (optional high-precision) +-- ============================================================ + +CREATE FUNCTION planet_heliocentric_de(int4, timestamptz) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_heliocentric_de(int4, timestamptz) IS + 'Heliocentric ecliptic J2000 position via JPL DE (sub-arcsecond). Falls back to VSOP87 if DE unavailable. Body IDs: 0=Sun, 1-8=Mercury-Neptune.'; + +CREATE FUNCTION planet_observe_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_observe_de(int4, observer, timestamptz) IS + 'Observe planet via JPL DE. Falls back to VSOP87. Body IDs: 1-8 (Mercury-Neptune).'; + +CREATE FUNCTION sun_observe_de(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_observe_de(observer, timestamptz) IS + 'Observe Sun via JPL DE. Falls back to VSOP87.'; + +CREATE FUNCTION moon_observe_de(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_observe_de(observer, timestamptz) IS + 'Observe Moon via JPL DE. Falls back to ELP2000-82B.'; + +CREATE FUNCTION lambert_transfer_de( + dep_body_id int4, arr_body_id int4, + dep_time timestamptz, arr_time timestamptz, + OUT c3_departure float8, OUT c3_arrival float8, + OUT v_inf_departure float8, OUT v_inf_arrival float8, + OUT tof_days float8, OUT transfer_sma float8 +) RETURNS RECORD + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION lambert_transfer_de(int4, int4, timestamptz, timestamptz) IS + 'Lambert transfer via JPL DE positions. Falls back to VSOP87. Body IDs 1-8.'; + +CREATE FUNCTION lambert_c3_de(int4, int4, timestamptz, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION lambert_c3_de(int4, int4, timestamptz, timestamptz) IS + 'Departure C3 via JPL DE. Falls back to VSOP87. For pork chop plots.'; + +CREATE FUNCTION galilean_observe_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION galilean_observe_de(int4, observer, timestamptz) IS + 'Observe Galilean moon with JPL DE parent position. L1.2 moon offsets. Body IDs: 0-3 (Io-Callisto).'; + +CREATE FUNCTION saturn_moon_observe_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION saturn_moon_observe_de(int4, observer, timestamptz) IS + 'Observe Saturn moon with JPL DE parent position. TASS 1.7 moon offsets. Body IDs: 0-7 (Mimas-Hyperion).'; + +CREATE FUNCTION uranus_moon_observe_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION uranus_moon_observe_de(int4, observer, timestamptz) IS + 'Observe Uranus moon with JPL DE parent position. GUST86 moon offsets. Body IDs: 0-4 (Miranda-Oberon).'; + +CREATE FUNCTION mars_moon_observe_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION mars_moon_observe_de(int4, observer, timestamptz) IS + 'Observe Mars moon with JPL DE parent position. MarsSat moon offsets. Body IDs: 0-1 (Phobos-Deimos).'; + + +-- Diagnostic function + +CREATE FUNCTION pg_orrery_ephemeris_info( + OUT provider text, OUT file_path text, + OUT start_jd float8, OUT end_jd float8, + OUT version int4, OUT au_km float8 +) RETURNS RECORD + AS 'MODULE_PATHNAME' LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION pg_orrery_ephemeris_info() IS + 'Returns current ephemeris provider status: VSOP87 or JPL_DE with file path, JD range, version, and AU value.'; + + +-- ============================================================ +-- Orbit determination (TLE fitting from observations) +-- ============================================================ + +-- Fit TLE from ECI position/velocity ephemeris +-- weights: per-observation weighting (NULL = uniform) + +CREATE FUNCTION tle_from_eci( + positions eci_position[], times timestamptz[], + seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false, + max_iter int4 DEFAULT 15, + weights float8[] DEFAULT NULL, + OUT fitted_tle tle, OUT iterations int4, + OUT rms_final float8, OUT rms_initial float8, OUT status text, + OUT condition_number float8, OUT covariance float8[], OUT nstate int4 +) RETURNS RECORD + AS 'MODULE_PATHNAME' LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_eci(eci_position[], timestamptz[], tle, boolean, int4, float8[]) IS + 'Fit a TLE from ECI position/velocity observations via differential correction. Optional per-observation weights for heterogeneous sensor fusion. Returns fitted TLE, RMS residuals, convergence status, condition number, and formal covariance matrix.'; + +-- Fit TLE from topocentric observations (az/el/range) — single observer +-- fit_range_rate: include range_rate as 4th residual component +-- weights: per-observation weighting (NULL = uniform) + +CREATE FUNCTION tle_from_topocentric( + observations topocentric[], times timestamptz[], + obs observer, + seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false, + max_iter int4 DEFAULT 15, + fit_range_rate boolean DEFAULT false, + weights float8[] DEFAULT NULL, + OUT fitted_tle tle, OUT iterations int4, + OUT rms_final float8, OUT rms_initial float8, OUT status text, + OUT condition_number float8, OUT covariance float8[], OUT nstate int4 +) RETURNS RECORD + AS 'MODULE_PATHNAME' LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_topocentric(topocentric[], timestamptz[], observer, tle, boolean, int4, boolean, float8[]) IS + 'Fit a TLE from topocentric (az/el/range) observations via differential correction. Optional range_rate fitting and per-observation weights. Returns fitted TLE, RMS residuals, convergence status, condition number, and formal covariance matrix.'; + +-- Fit TLE from topocentric observations — multiple observers + +CREATE FUNCTION tle_from_topocentric( + observations topocentric[], times timestamptz[], + observers observer[], observer_ids int4[], + seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false, + max_iter int4 DEFAULT 15, + fit_range_rate boolean DEFAULT false, + weights float8[] DEFAULT NULL, + OUT fitted_tle tle, OUT iterations int4, + OUT rms_final float8, OUT rms_initial float8, OUT status text, + OUT condition_number float8, OUT covariance float8[], OUT nstate int4 +) RETURNS RECORD + AS 'MODULE_PATHNAME', 'tle_from_topocentric_multi' + LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_topocentric(topocentric[], timestamptz[], observer[], int4[], tle, boolean, int4, boolean, float8[]) IS + 'Fit a TLE from topocentric observations collected by multiple ground stations. observer_ids[i] indexes into observers[]. Optional range_rate fitting and per-observation weights.'; + +-- Per-observation residuals diagnostic + +CREATE FUNCTION tle_fit_residuals( + fitted tle, + positions eci_position[], + times timestamptz[] +) RETURNS TABLE ( + t timestamptz, + dx_km float8, + dy_km float8, + dz_km float8, + pos_err_km float8 +) + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION tle_fit_residuals(tle, eci_position[], timestamptz[]) IS + 'Compute per-observation position residuals (km) between a TLE and ECI observations. Useful for fit quality assessment.'; + +-- Fit TLE from RA/Dec observations — single observer +-- Uses Gauss method for initial orbit determination when no seed is provided. +-- RA in hours [0,24), Dec in degrees [-90,90] (matches star_observe convention). +-- RMS output is in radians for angles-only mode. + +CREATE FUNCTION tle_from_angles( + ra_hours float8[], dec_degrees float8[], + times timestamptz[], + obs observer, + seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false, + max_iter int4 DEFAULT 15, + weights float8[] DEFAULT NULL, + OUT fitted_tle tle, OUT iterations int4, + OUT rms_final float8, OUT rms_initial float8, OUT status text, + OUT condition_number float8, OUT covariance float8[], OUT nstate int4 +) RETURNS RECORD AS 'MODULE_PATHNAME' LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_angles(float8[], float8[], timestamptz[], observer, tle, boolean, int4, float8[]) IS + 'Fit a TLE from angles-only (RA/Dec) observations via Gauss IOD + differential correction. RA in hours [0,24), Dec in degrees [-90,90]. RMS output in radians. Uses Gauss method for seed-free initial guess.'; + +-- Fit TLE from RA/Dec observations — multiple observers + +CREATE FUNCTION tle_from_angles( + ra_hours float8[], dec_degrees float8[], + times timestamptz[], + observers observer[], observer_ids int4[], + seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false, + max_iter int4 DEFAULT 15, + weights float8[] DEFAULT NULL, + OUT fitted_tle tle, OUT iterations int4, + OUT rms_final float8, OUT rms_initial float8, OUT status text, + OUT condition_number float8, OUT covariance float8[], OUT nstate int4 +) RETURNS RECORD + AS 'MODULE_PATHNAME', 'tle_from_angles_multi' + LANGUAGE C STABLE PARALLEL SAFE; +COMMENT ON FUNCTION tle_from_angles(float8[], float8[], timestamptz[], observer[], int4[], tle, boolean, int4, float8[]) IS + 'Fit a TLE from angles-only (RA/Dec) observations from multiple ground stations via Gauss IOD + differential correction.'; +-- pg_orrery 0.6.0 -> 0.7.0 migration +-- +-- Adds SP-GiST orbital trie index for satellite pass prediction. +-- 2-level trie: SMA (L0) + inclination (L1) with query-time RAAN filter. +-- The &? operator answers "might this satellite be visible?" + +-- ============================================================ +-- observer_window composite type (query parameter bundle) +-- ============================================================ + +CREATE TYPE observer_window AS ( + obs observer, + t_start timestamptz, + t_end timestamptz, + min_el float8 +); + +COMMENT ON TYPE observer_window IS + 'Observation query parameters: observer location, time window, and minimum elevation angle (degrees). Used with the &? visibility cone operator.'; + +-- ============================================================ +-- Visibility cone operator function +-- ============================================================ + +CREATE FUNCTION tle_visibility_possible(tle, observer_window) RETURNS boolean + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; + +COMMENT ON FUNCTION tle_visibility_possible(tle, observer_window) IS + 'Could this satellite be visible from the observer during the time window? Combines altitude, inclination, and RAAN checks. Conservative superset — survivors need SGP4 propagation for ground truth.'; + +-- ============================================================ +-- &? operator (visibility cone check) +-- ============================================================ +-- The indexed column (tle) MUST be the left argument so PostgreSQL +-- can form a ScanKey and pass it to inner_consistent for pruning. + +CREATE OPERATOR &? ( + LEFTARG = tle, + RIGHTARG = observer_window, + FUNCTION = tle_visibility_possible, + RESTRICT = contsel, + JOIN = contjoinsel +); + +COMMENT ON OPERATOR &? (tle, observer_window) IS + 'Visibility cone check: could this satellite be visible from the observer during the time window? Index-accelerated via SP-GiST orbital trie.'; + +-- ============================================================ +-- SP-GiST support functions +-- ============================================================ + +CREATE FUNCTION spgist_tle_config(internal, internal) RETURNS void + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION spgist_tle_choose(internal, internal) RETURNS void + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION spgist_tle_picksplit(internal, internal) RETURNS void + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION spgist_tle_inner_consistent(internal, internal) RETURNS void + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION spgist_tle_leaf_consistent(internal, internal) RETURNS void + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +-- ============================================================ +-- SP-GiST operator class (opt-in, not DEFAULT) +-- ============================================================ + +CREATE OPERATOR CLASS tle_spgist_ops + FOR TYPE tle USING spgist AS + OPERATOR 1 &? (tle, observer_window), + FUNCTION 1 spgist_tle_config(internal, internal), + FUNCTION 2 spgist_tle_choose(internal, internal), + FUNCTION 3 spgist_tle_picksplit(internal, internal), + FUNCTION 4 spgist_tle_inner_consistent(internal, internal), + FUNCTION 5 spgist_tle_leaf_consistent(internal, internal); +-- pg_orrery 0.7.0 -> 0.8.0 migration +-- +-- Adds orbital_elements type for comets/asteroids, MPC MPCORB.DAT parser, +-- and small_body_observe()/small_body_heliocentric() observation functions. + +-- ============================================================ +-- orbital_elements type +-- ============================================================ + +CREATE TYPE orbital_elements; + +CREATE FUNCTION orbital_elements_in(cstring) RETURNS orbital_elements + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION orbital_elements_out(orbital_elements) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION orbital_elements_recv(internal) RETURNS orbital_elements + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION orbital_elements_send(orbital_elements) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE orbital_elements ( + INPUT = orbital_elements_in, + OUTPUT = orbital_elements_out, + RECEIVE = orbital_elements_recv, + SEND = orbital_elements_send, + INTERNALLENGTH = 72, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE orbital_elements IS + 'Classical Keplerian orbital elements for comets and asteroids (epoch, q, e, inc, omega, Omega, tp, H, G). 72 bytes, fixed-size.'; + + +-- ============================================================ +-- Accessor functions +-- ============================================================ + +CREATE FUNCTION oe_epoch(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_epoch(orbital_elements) IS 'Osculation epoch (Julian date)'; + +CREATE FUNCTION oe_perihelion(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_perihelion(orbital_elements) IS 'Perihelion distance q (AU)'; + +CREATE FUNCTION oe_eccentricity(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_eccentricity(orbital_elements) IS 'Eccentricity'; + +CREATE FUNCTION oe_inclination(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_inclination(orbital_elements) IS 'Inclination (degrees)'; + +CREATE FUNCTION oe_arg_perihelion(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_arg_perihelion(orbital_elements) IS 'Argument of perihelion (degrees)'; + +CREATE FUNCTION oe_raan(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_raan(orbital_elements) IS 'Longitude of ascending node (degrees)'; + +CREATE FUNCTION oe_tp(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_tp(orbital_elements) IS 'Time of perihelion passage (Julian date)'; + +CREATE FUNCTION oe_h_mag(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_h_mag(orbital_elements) IS 'Absolute magnitude H (NaN if unknown)'; + +CREATE FUNCTION oe_g_slope(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_g_slope(orbital_elements) IS 'Slope parameter G (NaN if unknown)'; + +CREATE FUNCTION oe_semi_major_axis(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_semi_major_axis(orbital_elements) IS 'Semi-major axis a = q/(1-e) in AU. NULL for parabolic/hyperbolic orbits (e >= 1).'; + +CREATE FUNCTION oe_period_years(orbital_elements) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_period_years(orbital_elements) IS 'Orbital period in years = a^1.5 (Kepler third law). NULL for parabolic/hyperbolic orbits (e >= 1).'; + + +-- ============================================================ +-- MPC MPCORB.DAT parser +-- ============================================================ + +CREATE FUNCTION oe_from_mpc(text) RETURNS orbital_elements + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION oe_from_mpc(text) IS + 'Parse one MPCORB.DAT fixed-width line into orbital_elements. Converts MPC packed epoch, computes perihelion distance and tp from (a, e, M).'; + + +-- ============================================================ +-- Observation functions +-- ============================================================ + +CREATE FUNCTION small_body_heliocentric(orbital_elements, timestamptz) RETURNS heliocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_heliocentric(orbital_elements, timestamptz) IS + 'Heliocentric ecliptic J2000 position of a comet/asteroid from its orbital elements at a given time.'; + +CREATE FUNCTION small_body_observe(orbital_elements, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_observe(orbital_elements, observer, timestamptz) IS + 'Observe a comet/asteroid from orbital elements. Auto-fetches Earth via VSOP87. Returns topocentric az/el with geocentric range in km.'; +-- pg_orrery 0.8.0 -> 0.9.0 migration +-- +-- Adds equatorial type (apparent RA/Dec of date), atmospheric refraction, +-- stellar proper motion, and light-time corrected _apparent() functions. + +-- ============================================================ +-- equatorial type — apparent RA/Dec of date +-- ============================================================ + +CREATE TYPE equatorial; + +CREATE FUNCTION equatorial_in(cstring) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION equatorial_out(equatorial) RETURNS cstring + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION equatorial_recv(internal) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION equatorial_send(equatorial) RETURNS bytea + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE TYPE equatorial ( + INPUT = equatorial_in, + OUTPUT = equatorial_out, + RECEIVE = equatorial_recv, + SEND = equatorial_send, + INTERNALLENGTH = 24, + ALIGNMENT = double, + STORAGE = plain +); + +COMMENT ON TYPE equatorial IS + 'Apparent equatorial coordinates of date: RA (hours), Dec (degrees), distance (km). Solar system: J2000 precessed via IAU 1976. Satellites: TEME frame (~of-date to ~arcsecond). 24 bytes, fixed-size.'; + + +-- ============================================================ +-- Equatorial accessor functions +-- ============================================================ + +CREATE FUNCTION eq_ra(equatorial) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_ra(equatorial) IS 'Right ascension in hours [0, 24)'; + +CREATE FUNCTION eq_dec(equatorial) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_dec(equatorial) IS 'Declination in degrees [-90, 90]'; + +CREATE FUNCTION eq_distance(equatorial) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_distance(equatorial) IS 'Distance in km (0 for stars without parallax)'; + + +-- ============================================================ +-- Satellite RA/Dec functions +-- ============================================================ + +CREATE FUNCTION eci_to_equatorial(eci_position, observer, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_to_equatorial(eci_position, observer, timestamptz) IS + 'Topocentric apparent RA/Dec from ECI position. Observer parallax-corrected — LEO parallax is ~1 degree.'; + +CREATE FUNCTION eci_to_equatorial_geo(eci_position, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eci_to_equatorial_geo(eci_position, timestamptz) IS + 'Geocentric apparent RA/Dec from ECI position. Observer-independent — the direction of the TEME position vector.'; + + +-- ============================================================ +-- Solar system equatorial functions (VSOP87) +-- ============================================================ + +CREATE FUNCTION planet_equatorial(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_equatorial(int4, timestamptz) IS + 'Geocentric apparent RA/Dec of a planet via VSOP87. Body IDs: 1=Mercury through 8=Neptune.'; + +CREATE FUNCTION sun_equatorial(timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_equatorial(timestamptz) IS + 'Geocentric apparent RA/Dec of the Sun via VSOP87.'; + +CREATE FUNCTION moon_equatorial(timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_equatorial(timestamptz) IS + 'Geocentric apparent RA/Dec of the Moon via ELP2000-82B.'; + +CREATE FUNCTION small_body_equatorial(orbital_elements, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_equatorial(orbital_elements, timestamptz) IS + 'Geocentric apparent RA/Dec of a comet/asteroid from orbital elements. Earth via VSOP87.'; + +CREATE FUNCTION star_equatorial(float8, float8, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION star_equatorial(float8, float8, timestamptz) IS + 'Apparent RA/Dec of a star at a given time. Precesses J2000 catalog coordinates (RA hours, Dec degrees) to date via IAU 1976.'; + + +-- ============================================================ +-- Atmospheric refraction (Bennett 1982) +-- ============================================================ + +CREATE FUNCTION atmospheric_refraction(float8) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION atmospheric_refraction(float8) IS + 'Atmospheric refraction correction in degrees for a given geometric elevation (degrees). Standard atmosphere: P=1010 mbar, T=10C. Bennett (1982) formula with domain guard at -1 degree.'; + +CREATE FUNCTION atmospheric_refraction_ext(float8, float8, float8) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION atmospheric_refraction_ext(float8, float8, float8) IS + 'Atmospheric refraction with pressure/temperature correction. Args: elevation_deg, pressure_mbar, temperature_celsius. Meeus P/T factor applied to Bennett formula.'; + +CREATE FUNCTION topo_elevation_apparent(topocentric) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION topo_elevation_apparent(topocentric) IS + 'Apparent elevation in degrees — geometric elevation plus atmospheric refraction correction.'; + + +-- ============================================================ +-- Refracted pass prediction +-- ============================================================ + +CREATE FUNCTION predict_passes_refracted( + tle, observer, timestamptz, timestamptz, float8 DEFAULT 0.0 +) RETURNS SETOF pass_event + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE + ROWS 20; +COMMENT ON FUNCTION predict_passes_refracted(tle, observer, timestamptz, timestamptz, float8) IS + 'Predict satellite passes using a refracted horizon threshold (-0.569 deg geometric). Atmospheric refraction makes satellites visible ~35 seconds earlier at AOS and later at LOS.'; + + +-- ============================================================ +-- Stellar proper motion +-- ============================================================ + +CREATE FUNCTION star_observe_pm( + float8, float8, float8, float8, float8, float8, observer, timestamptz +) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION star_observe_pm(float8, float8, float8, float8, float8, float8, observer, timestamptz) IS + 'Observe a star with proper motion. Args: ra_hours, dec_deg, pm_ra_masyr (mu_alpha*cos(delta)), pm_dec_masyr, parallax_mas, rv_kms, observer, time. Hipparcos/Gaia convention for pm_ra.'; + +CREATE FUNCTION star_equatorial_pm( + float8, float8, float8, float8, float8, float8, timestamptz +) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION star_equatorial_pm(float8, float8, float8, float8, float8, float8, timestamptz) IS + 'Apparent RA/Dec of a star with proper motion. Args: ra_hours, dec_deg, pm_ra_masyr, pm_dec_masyr, parallax_mas, rv_kms, time. Distance from parallax if > 0.'; + + +-- ============================================================ +-- Light-time corrected observation functions +-- ============================================================ + +CREATE FUNCTION planet_observe_apparent(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_observe_apparent(int4, observer, timestamptz) IS + 'Observe a planet with single-iteration light-time correction. Body at retarded time, Earth at observation time. VSOP87.'; + +CREATE FUNCTION sun_observe_apparent(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_observe_apparent(observer, timestamptz) IS + 'Observe the Sun with light-time correction (~8.3 min). VSOP87.'; + +CREATE FUNCTION small_body_observe_apparent(orbital_elements, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_observe_apparent(orbital_elements, observer, timestamptz) IS + 'Observe a comet/asteroid with single-iteration light-time correction. Kepler propagation at retarded time, Earth via VSOP87 at observation time.'; + + +-- ============================================================ +-- Light-time corrected equatorial functions +-- ============================================================ + +CREATE FUNCTION planet_equatorial_apparent(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_equatorial_apparent(int4, timestamptz) IS + 'Geocentric apparent RA/Dec of a planet with light-time correction. VSOP87.'; + +CREATE FUNCTION moon_equatorial_apparent(timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_equatorial_apparent(timestamptz) IS + 'Geocentric apparent RA/Dec of the Moon with light-time correction (~1.3 sec). ELP2000-82B.'; + +CREATE FUNCTION small_body_equatorial_apparent(orbital_elements, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_equatorial_apparent(orbital_elements, timestamptz) IS + 'Geocentric apparent RA/Dec of a comet/asteroid with light-time correction.'; + + +-- ============================================================ +-- DE ephemeris equatorial variants (STABLE) +-- ============================================================ + +CREATE FUNCTION planet_equatorial_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_equatorial_de(int4, timestamptz) IS + 'Geocentric apparent RA/Dec of a planet via JPL DE ephemeris (falls back to VSOP87 + equatorial).'; + +CREATE FUNCTION moon_equatorial_de(timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_equatorial_de(timestamptz) IS + 'Geocentric apparent RA/Dec of the Moon via JPL DE ephemeris (falls back to ELP2000-82B + equatorial).'; +-- pg_orrery 0.9.0 -> 0.10.0 migration +-- +-- Adds annual aberration to existing _apparent() functions, +-- 6 new _apparent_de() variants, equatorial angular separation +-- operator and cone predicate, and stellar annual parallax. + +-- ============================================================ +-- Equatorial angular distance and cone search +-- ============================================================ + +CREATE FUNCTION eq_angular_distance(equatorial, equatorial) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_angular_distance(equatorial, equatorial) IS + 'Angular separation in degrees between two equatorial positions. Vincenty formula (stable at 0 and 180 degrees).'; + +CREATE FUNCTION eq_within_cone(equatorial, equatorial, float8) RETURNS bool + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_within_cone(equatorial, equatorial, float8) IS + 'True if first position is within radius_deg of second position. Cosine shortcut for fast rejection.'; + +CREATE OPERATOR <-> ( + LEFTARG = equatorial, + RIGHTARG = equatorial, + FUNCTION = eq_angular_distance, + COMMUTATOR = <-> +); +COMMENT ON OPERATOR <-> (equatorial, equatorial) IS + 'Angular separation in degrees between two equatorial positions.'; + + +-- ============================================================ +-- DE apparent observation functions (STABLE, light-time + aberration) +-- ============================================================ + +CREATE FUNCTION planet_observe_apparent_de(int4, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_observe_apparent_de(int4, observer, timestamptz) IS + 'Observe a planet with light-time correction and annual aberration via JPL DE (falls back to VSOP87).'; + +CREATE FUNCTION sun_observe_apparent_de(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_observe_apparent_de(observer, timestamptz) IS + 'Observe the Sun with aberration via JPL DE (falls back to VSOP87).'; + +CREATE FUNCTION moon_observe_apparent_de(observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_observe_apparent_de(observer, timestamptz) IS + 'Observe the Moon with light-time correction and annual aberration via JPL DE (falls back to ELP2000-82B).'; + +CREATE FUNCTION planet_equatorial_apparent_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_equatorial_apparent_de(int4, timestamptz) IS + 'Geocentric apparent RA/Dec of a planet with light-time correction and annual aberration via JPL DE (falls back to VSOP87).'; + +CREATE FUNCTION moon_equatorial_apparent_de(timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_equatorial_apparent_de(timestamptz) IS + 'Geocentric apparent RA/Dec of the Moon with light-time correction and annual aberration via JPL DE (falls back to ELP2000-82B).'; + +CREATE FUNCTION small_body_observe_apparent_de(orbital_elements, observer, timestamptz) RETURNS topocentric + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION small_body_observe_apparent_de(orbital_elements, observer, timestamptz) IS + 'Observe a comet/asteroid with light-time correction and annual aberration. Earth position via JPL DE (falls back to VSOP87).'; +-- pg_orrery 0.10.0 -> 0.11.0 migration +-- +-- Adds make_orbital_elements() constructors and +-- geocentric equatorial functions for planetary moons. + +-- ============================================================ +-- orbital_elements constructors +-- ============================================================ + +CREATE FUNCTION make_orbital_elements( + epoch_jd float8, q_au float8, e float8, + inc_rad float8, omega_rad float8, node_rad float8, + tp_jd float8, h_mag float8, g_slope float8 +) RETURNS orbital_elements + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION make_orbital_elements(float8,float8,float8,float8,float8,float8,float8,float8,float8) IS + 'Construct orbital_elements from 9 floats (angular elements in radians).'; + +CREATE FUNCTION make_orbital_elements_deg( + epoch_jd float8, q_au float8, e float8, + inc_deg float8, omega_deg float8, node_deg float8, + tp_jd float8, h_mag float8, g_slope float8 +) RETURNS orbital_elements + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION make_orbital_elements_deg(float8,float8,float8,float8,float8,float8,float8,float8,float8) IS + 'Construct orbital_elements from 9 floats (angular elements in degrees). Matches text I/O and most catalog column layouts.'; + + +-- ============================================================ +-- Planetary moon equatorial functions +-- ============================================================ + +CREATE FUNCTION galilean_equatorial(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION galilean_equatorial(int4, timestamptz) IS + 'Geometric geocentric RA/Dec of a Galilean moon (0=Io, 1=Europa, 2=Ganymede, 3=Callisto). L1.2 theory + VSOP87. No light-time or aberration correction.'; + +CREATE FUNCTION saturn_moon_equatorial(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION saturn_moon_equatorial(int4, timestamptz) IS + 'Geometric geocentric RA/Dec of a Saturn moon (0=Mimas..7=Hyperion). TASS17 theory + VSOP87. No light-time or aberration correction.'; + +CREATE FUNCTION uranus_moon_equatorial(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION uranus_moon_equatorial(int4, timestamptz) IS + 'Geometric geocentric RA/Dec of a Uranus moon (0=Miranda..4=Oberon). GUST86 theory + VSOP87. No light-time or aberration correction.'; + +CREATE FUNCTION mars_moon_equatorial(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION mars_moon_equatorial(int4, timestamptz) IS + 'Geometric geocentric RA/Dec of a Mars moon (0=Phobos, 1=Deimos). MarsSat theory + VSOP87. No light-time or aberration correction.'; +-- pg_orrery 0.11.0 -> 0.12.0 migration +-- +-- Adds equatorial GiST operator class for KNN sky queries +-- and DE moon equatorial functions for all 4 planetary moon families. + +-- ============================================================ +-- GiST support functions for equatorial type +-- ============================================================ + +CREATE FUNCTION gist_eq_consistent(internal, equatorial, smallint, oid, internal) RETURNS bool + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_union(internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_compress(internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_decompress(internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_penalty(internal, internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_picksplit(internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_same(internal, internal, internal) RETURNS internal + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +CREATE FUNCTION gist_eq_distance(internal, equatorial, smallint, oid, internal) RETURNS float8 + AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +-- ============================================================ +-- Equatorial GiST operator class (KNN ordering only) +-- ============================================================ + +CREATE OPERATOR CLASS eq_gist_ops + DEFAULT FOR TYPE equatorial USING gist AS + OPERATOR 15 <-> (equatorial, equatorial) FOR ORDER BY pg_catalog.float_ops, + FUNCTION 1 gist_eq_consistent(internal, equatorial, smallint, oid, internal), + FUNCTION 2 gist_eq_union(internal, internal), + FUNCTION 3 gist_eq_compress(internal), + FUNCTION 4 gist_eq_decompress(internal), + FUNCTION 5 gist_eq_penalty(internal, internal, internal), + FUNCTION 6 gist_eq_picksplit(internal, internal), + FUNCTION 7 gist_eq_same(internal, internal, internal), + FUNCTION 8 gist_eq_distance(internal, equatorial, smallint, oid, internal); + +-- ============================================================ +-- DE moon equatorial functions (STABLE, fall back to VSOP87) +-- ============================================================ + +CREATE FUNCTION galilean_equatorial_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION galilean_equatorial_de(int4, timestamptz) IS + 'Geocentric RA/Dec of a Galilean moon via DE parent position (falls back to VSOP87). 0=Io, 1=Europa, 2=Ganymede, 3=Callisto.'; + +CREATE FUNCTION saturn_moon_equatorial_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION saturn_moon_equatorial_de(int4, timestamptz) IS + 'Geocentric RA/Dec of a Saturn moon via DE parent position (falls back to VSOP87). 0=Mimas..7=Hyperion.'; + +CREATE FUNCTION uranus_moon_equatorial_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION uranus_moon_equatorial_de(int4, timestamptz) IS + 'Geocentric RA/Dec of a Uranus moon via DE parent position (falls back to VSOP87). 0=Miranda..4=Oberon.'; + +CREATE FUNCTION mars_moon_equatorial_de(int4, timestamptz) RETURNS equatorial + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION mars_moon_equatorial_de(int4, timestamptz) IS + 'Geocentric RA/Dec of a Mars moon via DE parent position (falls back to VSOP87). 0=Phobos, 1=Deimos.'; + + +-- ============================================================ +-- v0.13.0: make_equatorial() constructor +-- ============================================================ + +CREATE FUNCTION make_equatorial(ra_hours float8, dec_deg float8, distance_km float8) + RETURNS equatorial + AS 'MODULE_PATHNAME', 'make_equatorial' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; + +COMMENT ON FUNCTION make_equatorial(float8, float8, float8) IS + 'Construct equatorial from RA (hours [0,24)), Dec (degrees [-90,90]), distance (km).'; + + +-- ============================================================ +-- v0.13.0: Rise/set prediction functions +-- ============================================================ + +CREATE FUNCTION planet_next_rise(body_id int4, obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_next_rise(int4, observer, timestamptz) IS + 'Next geometric rise time for a planet. Returns NULL if no rise within 7 days. body_id: 1=Mercury..8=Neptune.'; + +CREATE FUNCTION planet_next_set(body_id int4, obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_next_set(int4, observer, timestamptz) IS + 'Next geometric set time for a planet. Returns NULL if no set within 7 days. body_id: 1=Mercury..8=Neptune.'; + +CREATE FUNCTION sun_next_rise(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_next_rise(observer, timestamptz) IS + 'Next geometric sunrise. Returns NULL if Sun does not rise within 7 days (polar night).'; + +CREATE FUNCTION sun_next_set(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_next_set(observer, timestamptz) IS + 'Next geometric sunset. Returns NULL if Sun does not set within 7 days (midnight sun).'; + +CREATE FUNCTION moon_next_rise(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_next_rise(observer, timestamptz) IS + 'Next geometric moonrise. Returns NULL if Moon does not rise within 7 days.'; + +CREATE FUNCTION moon_next_set(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_next_set(observer, timestamptz) IS + 'Next geometric moonset. Returns NULL if Moon does not set within 7 days.'; + +CREATE FUNCTION sun_next_rise_refracted(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_next_rise_refracted(observer, timestamptz) IS + 'Next refracted sunrise (-0.833 deg threshold: refraction + semidiameter). Earlier than geometric by ~4 min.'; + +CREATE FUNCTION sun_next_set_refracted(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_next_set_refracted(observer, timestamptz) IS + 'Next refracted sunset (-0.833 deg threshold: refraction + semidiameter). Later than geometric by ~4 min.'; + + +-- ============================================================ +-- v0.14.0: Refracted planet/moon rise/set +-- ============================================================ + +CREATE FUNCTION planet_next_rise_refracted(body_id int4, obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_next_rise_refracted(int4, observer, timestamptz) IS + 'Next refracted rise time for a planet (-0.569 deg threshold: atmospheric refraction only). Earlier than geometric.'; + +CREATE FUNCTION planet_next_set_refracted(body_id int4, obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_next_set_refracted(int4, observer, timestamptz) IS + 'Next refracted set time for a planet (-0.569 deg threshold: atmospheric refraction only). Later than geometric.'; + +CREATE FUNCTION moon_next_rise_refracted(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_next_rise_refracted(observer, timestamptz) IS + 'Next refracted moonrise (-0.833 deg threshold: refraction + semidiameter). Earlier than geometric.'; + +CREATE FUNCTION moon_next_set_refracted(obs observer, t timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_next_set_refracted(observer, timestamptz) IS + 'Next refracted moonset (-0.833 deg threshold: refraction + semidiameter). Later than geometric.'; + + +-- ============================================================ +-- v0.14.0: Constellation identification (Roman 1987, CDS VI/42) +-- ============================================================ + +CREATE FUNCTION constellation(eq equatorial) RETURNS text + AS 'MODULE_PATHNAME', 'constellation_from_equatorial' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION constellation(equatorial) IS + 'IAU constellation abbreviation (3 letters) from equatorial coordinates (Roman 1987).'; + +CREATE FUNCTION constellation(ra_hours float8, dec_deg float8) RETURNS text + AS 'MODULE_PATHNAME', 'constellation_from_radec' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION constellation(float8, float8) IS + 'IAU constellation from J2000 RA (hours [0,24)) and Dec (degrees [-90,90]).'; +-- pg_orrery 0.14.0 -> 0.15.0 migration +-- +-- Adds: constellation_full_name (1 function), +-- rise/set status diagnostics (3 functions). + +-- ============================================================ +-- Constellation full name lookup +-- ============================================================ + +CREATE FUNCTION constellation_full_name(abbr text) RETURNS text + AS 'MODULE_PATHNAME', 'constellation_full_name_from_abbr' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION constellation_full_name(text) IS + 'Full IAU constellation name from 3-letter abbreviation. Returns NULL for invalid abbreviation.'; + +-- ============================================================ +-- Rise/set status diagnostics +-- ============================================================ + +CREATE FUNCTION sun_rise_set_status(obs observer, t timestamptz) RETURNS text + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_rise_set_status(observer, timestamptz) IS + 'Classify Sun visibility: rises_and_sets, circumpolar, or never_rises.'; + +CREATE FUNCTION moon_rise_set_status(obs observer, t timestamptz) RETURNS text + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_rise_set_status(observer, timestamptz) IS + 'Classify Moon visibility: rises_and_sets, circumpolar, or never_rises.'; + +CREATE FUNCTION planet_rise_set_status(body_id int4, obs observer, t timestamptz) RETURNS text + AS 'MODULE_PATHNAME' LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_rise_set_status(int4, observer, timestamptz) IS + 'Classify planet visibility: rises_and_sets, circumpolar, or never_rises. Body IDs 1-8 (Mercury-Neptune).'; +-- pg_orrery 0.15.0 -> 0.16.0: twilight, lunar phase, planet magnitude + +-- ============================================================ +-- Twilight functions (6) +-- ============================================================ + +CREATE FUNCTION sun_civil_dawn(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_civil_dawn' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_civil_dawn(observer, timestamptz) IS + 'Next civil dawn (Sun crosses -6 deg rising). Outdoor activities without artificial light.'; + +CREATE FUNCTION sun_civil_dusk(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_civil_dusk' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_civil_dusk(observer, timestamptz) IS + 'Next civil dusk (Sun crosses -6 deg setting). Artificial light needed.'; + +CREATE FUNCTION sun_nautical_dawn(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_nautical_dawn' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_nautical_dawn(observer, timestamptz) IS + 'Next nautical dawn (Sun crosses -12 deg rising). Horizon visible at sea.'; + +CREATE FUNCTION sun_nautical_dusk(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_nautical_dusk' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_nautical_dusk(observer, timestamptz) IS + 'Next nautical dusk (Sun crosses -12 deg setting). Horizon no longer visible at sea.'; + +CREATE FUNCTION sun_astronomical_dawn(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_astronomical_dawn' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_astronomical_dawn(observer, timestamptz) IS + 'Next astronomical dawn (Sun crosses -18 deg rising). Sky was fully dark.'; + +CREATE FUNCTION sun_astronomical_dusk(observer, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'sun_astronomical_dusk' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION sun_astronomical_dusk(observer, timestamptz) IS + 'Next astronomical dusk (Sun crosses -18 deg setting). Sky becomes fully dark.'; + +-- ============================================================ +-- Lunar phase functions (4) +-- ============================================================ + +CREATE FUNCTION moon_phase_angle(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_phase_angle' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_phase_angle(timestamptz) IS + 'Sun-Earth-Moon phase angle in degrees [0,360). 0=new, 90=first quarter, 180=full, 270=last quarter.'; + +CREATE FUNCTION moon_illumination(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_illumination' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_illumination(timestamptz) IS + 'Illuminated fraction of the Moon disk [0.0, 1.0].'; + +CREATE FUNCTION moon_phase_name(timestamptz) RETURNS text + AS 'MODULE_PATHNAME', 'moon_phase_name' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_phase_name(timestamptz) IS + 'Moon phase name: new_moon, waxing_crescent, first_quarter, waxing_gibbous, full_moon, waning_gibbous, last_quarter, waning_crescent.'; + +CREATE FUNCTION moon_age(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_age' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_age(timestamptz) IS + 'Days since last new moon [0, ~29.53), approximated from phase angle.'; + +-- ============================================================ +-- Planet magnitude (1) +-- ============================================================ + +CREATE FUNCTION planet_magnitude(int4, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'planet_magnitude' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_magnitude(int4, timestamptz) IS + 'Apparent visual magnitude of a planet (Mallama & Hilton 2018). Body IDs 1-8. Saturn ring tilt not modeled.'; +-- pg_orrery 0.16.0 -> 0.17.0: solar elongation, planet phase, satellite eclipse, +-- observing night quality, lunar libration + +-- ============================================================ +-- Solar elongation (1) +-- ============================================================ + +CREATE FUNCTION solar_elongation(int4, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'solar_elongation' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION solar_elongation(int4, timestamptz) IS + 'Sun-Earth-Planet angle in degrees [0, 180]. How far a planet appears from the Sun. Body IDs 1-8.'; + +-- ============================================================ +-- Planet phase fraction (1) +-- ============================================================ + +CREATE FUNCTION planet_phase(int4, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'planet_phase' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_phase(int4, timestamptz) IS + 'Illuminated fraction of a planet disk as seen from Earth [0.0, 1.0]. Body IDs 1-8.'; + +-- ============================================================ +-- Satellite eclipse prediction (4) +-- ============================================================ + +CREATE FUNCTION satellite_is_eclipsed(tle, timestamptz) RETURNS bool + AS 'MODULE_PATHNAME', 'satellite_is_eclipsed' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_is_eclipsed(tle, timestamptz) IS + 'True if the satellite is in Earth cylindrical shadow at the given time.'; + +CREATE FUNCTION satellite_next_eclipse_entry(tle, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'satellite_next_eclipse_entry' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_next_eclipse_entry(tle, timestamptz) IS + 'Next time the satellite enters Earth shadow (up to 7-day search). NULL if none found.'; + +CREATE FUNCTION satellite_next_eclipse_exit(tle, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'satellite_next_eclipse_exit' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_next_eclipse_exit(tle, timestamptz) IS + 'Next time the satellite exits Earth shadow (up to 7-day search). NULL if none found.'; + +CREATE FUNCTION satellite_eclipse_fraction(tle, timestamptz, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'satellite_eclipse_fraction' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_eclipse_fraction(tle, timestamptz, timestamptz) IS + 'Fraction of the given time window the satellite spends in eclipse [0.0, 1.0].'; + +-- ============================================================ +-- Observing night quality (1) +-- ============================================================ + +CREATE FUNCTION observing_night_quality(observer, timestamptz DEFAULT NOW()) +RETURNS text AS $$ +DECLARE + astro_dusk timestamptz; + astro_dawn timestamptz; + dark_hours float8; + illum float8; + moon_up bool; + score int := 100; +BEGIN + -- Astronomical darkness window + astro_dusk := sun_astronomical_dusk($1, $2); + IF astro_dusk IS NULL THEN + RETURN 'poor'; -- No astronomical darkness (polar summer) + END IF; + astro_dawn := sun_astronomical_dawn($1, astro_dusk); + IF astro_dawn IS NULL THEN + RETURN 'poor'; + END IF; + + dark_hours := extract(epoch FROM astro_dawn - astro_dusk) / 3600.0; + + -- Short dark window penalty + IF dark_hours < 2.0 THEN score := score - 40; + ELSIF dark_hours < 4.0 THEN score := score - 20; + ELSIF dark_hours < 6.0 THEN score := score - 10; + END IF; + + -- Moon illumination penalty + illum := moon_illumination(astro_dusk); + IF illum > 0.75 THEN + -- Check if Moon is above horizon during darkness + moon_up := topo_elevation(moon_observe($1, astro_dusk)) > 0 + OR topo_elevation(moon_observe($1, astro_dusk + (astro_dawn - astro_dusk) / 2)) > 0; + IF moon_up THEN + score := score - (illum * 30)::int; -- Up to -30 for full moon + END IF; + END IF; + + -- Classify + IF score >= 80 THEN RETURN 'excellent'; + ELSIF score >= 60 THEN RETURN 'good'; + ELSIF score >= 40 THEN RETURN 'fair'; + ELSE RETURN 'poor'; + END IF; +END; +$$ LANGUAGE plpgsql STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION observing_night_quality(observer, timestamptz) IS + 'Composite observing quality assessment: excellent/good/fair/poor based on darkness duration and Moon interference.'; + +-- ============================================================ +-- Lunar libration (5) +-- ============================================================ + +CREATE FUNCTION moon_libration_longitude(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_libration_longitude' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_libration_longitude(timestamptz) IS + 'Optical libration in longitude (degrees, typically [-8, +8]). Meeus Ch. 53.'; + +CREATE FUNCTION moon_libration_latitude(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_libration_latitude' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_libration_latitude(timestamptz) IS + 'Optical libration in latitude (degrees, typically [-7, +7]). Meeus Ch. 53.'; + +CREATE FUNCTION moon_libration_position_angle(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_libration_position_angle' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_libration_position_angle(timestamptz) IS + 'Position angle of the Moon axis (degrees, [0, 360)). Meeus Ch. 53.'; + +CREATE FUNCTION moon_libration(timestamptz, + OUT l float8, OUT b float8, OUT p float8) RETURNS record + AS 'MODULE_PATHNAME', 'moon_libration' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_libration(timestamptz) IS + 'All three libration values: longitude (l), latitude (b), position angle (p) in degrees.'; + +CREATE FUNCTION moon_subsolar_longitude(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'moon_subsolar_longitude' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_subsolar_longitude(timestamptz) IS + 'Selenographic longitude of the sub-solar point (degrees, [0, 360)). Determines the lunar terminator position.'; +-- pg_orrery 0.17.0 -> 0.18.0: Saturn ring tilt, penumbral eclipse, +-- rise/set event windows, angular separation rate + +-- ============================================================ +-- Saturn ring tilt (1) +-- ============================================================ + +CREATE FUNCTION saturn_ring_tilt(timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'saturn_ring_tilt' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION saturn_ring_tilt(timestamptz) IS + 'Sub-observer latitude B'' of Earth relative to Saturn ring plane (degrees, [-27, +27]). Uses IAU 2000 pole direction.'; + +-- ============================================================ +-- Penumbral eclipse prediction (4) +-- ============================================================ + +CREATE FUNCTION satellite_in_penumbra(tle, timestamptz) RETURNS bool + AS 'MODULE_PATHNAME', 'satellite_in_penumbra' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_in_penumbra(tle, timestamptz) IS + 'True if the satellite is in Earth penumbral shadow (partial sunlight) at the given time.'; + +CREATE FUNCTION satellite_shadow_state(tle, timestamptz) RETURNS text + AS 'MODULE_PATHNAME', 'satellite_shadow_state' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_shadow_state(tle, timestamptz) IS + 'Shadow state of satellite: ''sunlit'', ''penumbra'', or ''umbra''. Uses conical shadow model.'; + +CREATE FUNCTION satellite_next_penumbra_entry(tle, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'satellite_next_penumbra_entry' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_next_penumbra_entry(tle, timestamptz) IS + 'Next time the satellite enters Earth penumbral shadow (up to 7-day search). NULL if none found.'; + +CREATE FUNCTION satellite_next_penumbra_exit(tle, timestamptz) RETURNS timestamptz + AS 'MODULE_PATHNAME', 'satellite_next_penumbra_exit' + LANGUAGE C STABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_next_penumbra_exit(tle, timestamptz) IS + 'Next time the satellite exits Earth penumbral shadow (up to 7-day search). NULL if none found.'; + +-- ============================================================ +-- Rise/set event windows (3 SRFs) +-- ============================================================ + +CREATE FUNCTION planet_rise_set_events( + body_id int4, observer, start timestamptz, stop timestamptz, + refracted bool DEFAULT false +) RETURNS TABLE(event_time timestamptz, event_type text) + AS 'MODULE_PATHNAME', 'planet_rise_set_events' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION planet_rise_set_events(int4, observer, timestamptz, timestamptz, bool) IS + 'All rise and set events for a planet within a time window. Returns TABLE(event_time, event_type). Max 366-day window.'; + +CREATE FUNCTION sun_rise_set_events( + observer, start timestamptz, stop timestamptz, + refracted bool DEFAULT false +) RETURNS TABLE(event_time timestamptz, event_type text) + AS 'MODULE_PATHNAME', 'sun_rise_set_events' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION sun_rise_set_events(observer, timestamptz, timestamptz, bool) IS + 'All rise and set events for the Sun within a time window. Returns TABLE(event_time, event_type). Max 366-day window.'; + +CREATE FUNCTION moon_rise_set_events( + observer, start timestamptz, stop timestamptz, + refracted bool DEFAULT false +) RETURNS TABLE(event_time timestamptz, event_type text) + AS 'MODULE_PATHNAME', 'moon_rise_set_events' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION moon_rise_set_events(observer, timestamptz, timestamptz, bool) IS + 'All rise and set events for the Moon within a time window. Returns TABLE(event_time, event_type). Max 366-day window.'; + +-- ============================================================ +-- Angular separation rate (2) +-- ============================================================ + +CREATE FUNCTION eq_angular_rate( + equatorial, equatorial, equatorial, equatorial, float8 +) RETURNS float8 + AS 'MODULE_PATHNAME', 'eq_angular_rate' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION eq_angular_rate(equatorial, equatorial, equatorial, equatorial, float8) IS + 'Rate of change of angular separation (deg/hr). Args: pos1_t0, pos2_t0, pos1_t1, pos2_t1, dt_seconds. Positive = separating, negative = approaching.'; + +CREATE FUNCTION planet_angular_rate(int4, int4, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'planet_angular_rate' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION planet_angular_rate(int4, int4, timestamptz) IS + 'Rate of angular separation change between two bodies (deg/hr). Body IDs: 0=Sun, 1-8=planets, 10=Moon. Uses 1-minute finite difference.'; +-- pg_orrery 0.18.0 -> 0.19.0: Sun almanac SRF, conjunction detection, +-- penumbral fraction, physical libration + +-- ============================================================ +-- Sun almanac events SRF (1) +-- ============================================================ + +CREATE FUNCTION sun_almanac_events( + observer, start timestamptz, stop timestamptz, + refracted bool DEFAULT false +) RETURNS TABLE(event_time timestamptz, event_type text) + AS 'MODULE_PATHNAME', 'sun_almanac_events' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 50; +COMMENT ON FUNCTION sun_almanac_events(observer, timestamptz, timestamptz, bool) IS + 'All Sun events (rise, set, civil/nautical/astronomical dawn and dusk) within a time window, sorted chronologically. Replaces chained individual twilight queries. Max 366-day window.'; + +-- ============================================================ +-- Conjunction detection SRF (1) +-- ============================================================ + +CREATE FUNCTION planet_conjunctions( + int4, int4, timestamptz, timestamptz, + max_separation float8 DEFAULT 10.0 +) RETURNS TABLE(conjunction_time timestamptz, separation_deg float8) + AS 'MODULE_PATHNAME', 'planet_conjunctions' + LANGUAGE C STABLE STRICT PARALLEL SAFE + ROWS 10; +COMMENT ON FUNCTION planet_conjunctions(int4, int4, timestamptz, timestamptz, float8) IS + 'Finds conjunctions (angular separation minima) between two solar system bodies. Body IDs: 0=Sun, 1-8=planets, 10=Moon. max_separation filters results (degrees, default 10). Max 3660-day (10-year) window.'; + +-- ============================================================ +-- Penumbral fraction (1) +-- ============================================================ + +CREATE FUNCTION satellite_penumbral_fraction(tle, timestamptz) RETURNS float8 + AS 'MODULE_PATHNAME', 'satellite_penumbral_fraction' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION satellite_penumbral_fraction(tle, timestamptz) IS + 'Continuous shadow depth: 0.0 = full sunlight, 1.0 = full umbra. Linear interpolation in penumbral zone.'; + +-- ============================================================ +-- Physical libration (1) +-- ============================================================ + +CREATE FUNCTION moon_physical_libration( + timestamptz, + OUT tau float8, OUT rho float8 +) RETURNS record + AS 'MODULE_PATHNAME', 'moon_physical_libration' + LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE; +COMMENT ON FUNCTION moon_physical_libration(timestamptz) IS + 'Physical libration corrections (Meeus p. 373): tau = longitude correction, rho = latitude correction (both in degrees, typically |value| < 0.1).'; diff --git a/src/eclipse_funcs.c b/src/eclipse_funcs.c index e6fdbde..64d6458 100644 --- a/src/eclipse_funcs.c +++ b/src/eclipse_funcs.c @@ -41,6 +41,7 @@ PG_FUNCTION_INFO_V1(satellite_in_penumbra); PG_FUNCTION_INFO_V1(satellite_shadow_state); PG_FUNCTION_INFO_V1(satellite_next_penumbra_entry); PG_FUNCTION_INFO_V1(satellite_next_penumbra_exit); +PG_FUNCTION_INFO_V1(satellite_penumbral_fraction); #define DEG_TO_RAD_EC (M_PI / 180.0) #define RAD_TO_DEG_EC (180.0 / M_PI) @@ -579,3 +580,82 @@ satellite_next_penumbra_exit(PG_FUNCTION_ARGS) PG_RETURN_NULL(); } + + +/* + * satellite_shadow_fraction_pos -- continuous shadow depth + * + * Returns 0.0 (full sunlight) through 1.0 (full umbra). + * Linear interpolation in the penumbral zone between r_umbra and + * r_penumbra. The true disk-overlap curve is slightly nonlinear, + * but for LEO the penumbral zone is narrow (~10-30s transit) and + * the linear approximation differs by <5%. + */ +static double +satellite_shadow_fraction_pos(const double sat_pos[3], + const double sun_dir[3], + double sun_dist_km) +{ + double proj, perp[3], perp_dist; + double d; + double r_umbra, r_penumbra; + + proj = sat_pos[0] * sun_dir[0] + + sat_pos[1] * sun_dir[1] + + sat_pos[2] * sun_dir[2]; + + if (proj > 0.0) + return 0.0; /* sunlit side */ + + d = -proj; + + perp[0] = sat_pos[0] - proj * sun_dir[0]; + perp[1] = sat_pos[1] - proj * sun_dir[1]; + perp[2] = sat_pos[2] - proj * sun_dir[2]; + perp_dist = sqrt(perp[0] * perp[0] + + perp[1] * perp[1] + + perp[2] * perp[2]); + + r_umbra = WGS84_A - d * (SUN_RADIUS_KM - WGS84_A) / sun_dist_km; + r_penumbra = WGS84_A + d * (SUN_RADIUS_KM + WGS84_A) / sun_dist_km; + + if (r_umbra > 0.0 && perp_dist <= r_umbra) + return 1.0; /* full umbra */ + + if (perp_dist >= r_penumbra) + return 0.0; /* full sunlight */ + + /* Linear interpolation in penumbral zone */ + return (r_penumbra - perp_dist) / (r_penumbra - r_umbra); +} + + +/* ================================================================ + * satellite_penumbral_fraction(tle, timestamptz) -> float8 + * + * Continuous shadow depth: 0.0 = full sunlight, 1.0 = full umbra. + * Values between 0 and 1 indicate the satellite is in the penumbral + * zone with partial sunlight. + * ================================================================ + */ +Datum +satellite_penumbral_fraction(PG_FUNCTION_ARGS) +{ + pg_tle *tle = (pg_tle *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double jd; + double pos[3], vel[3]; + double sun_dir[3]; + double sun_dist_km; + int err; + + jd = timestamptz_to_jd(ts); + + err = do_propagate_ec(tle, jd, pos, vel); + if (err != 0) + PG_RETURN_FLOAT8(0.0); /* propagation failure = assume sunlit */ + + sun_direction_and_distance(jd, sun_dir, &sun_dist_km); + + PG_RETURN_FLOAT8(satellite_shadow_fraction_pos(pos, sun_dir, sun_dist_km)); +} diff --git a/src/equatorial_funcs.c b/src/equatorial_funcs.c index 585f1e9..cffd17b 100644 --- a/src/equatorial_funcs.c +++ b/src/equatorial_funcs.c @@ -19,6 +19,9 @@ #include "postgres.h" #include "fmgr.h" +#include "funcapi.h" +#include "access/htup_details.h" +#include "catalog/pg_type.h" #include "utils/timestamp.h" #include "utils/builtins.h" #include "libpq/pqformat.h" @@ -57,6 +60,9 @@ PG_FUNCTION_INFO_V1(eq_within_cone); PG_FUNCTION_INFO_V1(eq_angular_rate); PG_FUNCTION_INFO_V1(planet_angular_rate); +/* Conjunction detection */ +PG_FUNCTION_INFO_V1(planet_conjunctions); + /* ---------------------------------------------------------------- * Static helper -- observer geodetic to ECEF. @@ -676,3 +682,268 @@ planet_angular_rate(PG_FUNCTION_ARGS) PG_RETURN_FLOAT8(rate); } + + +/* ================================================================ + * Conjunction detection SRF + * + * Finds local minima of angular separation between two solar system + * bodies over a time window. Daily scan detects candidate minima, + * then ternary search refines to ~1 second precision. + * ================================================================ + */ + +#define CONJUNCTION_MAX_RESULTS 2048 +#define CONJUNCTION_MAX_WINDOW 3660.0 /* ~10 years */ + +/* Ternary search tolerance: 1 second in JD */ +#define TERNARY_TOL_JD (1.0 / 86400.0) + +typedef struct +{ + TimestampTz conjunction_time; + double separation_deg; +} conjunction_result; + +typedef struct +{ + conjunction_result *results; + int count; + int current; +} conjunction_ctx; + + +/* + * Compute geocentric equatorial RA/Dec for a body at a given JD. + * Returns separation-ready spherical coordinates in radians. + */ +static void +body_equatorial_at_jd(int body_id, double jd, double earth_xyz[6], + double *ra_out, double *dec_out) +{ + double geo_ecl[3]; + double geo_equ[3]; + double dist; + + if (body_id == BODY_SUN) + { + geo_ecl[0] = -earth_xyz[0]; + geo_ecl[1] = -earth_xyz[1]; + geo_ecl[2] = -earth_xyz[2]; + } + else if (body_id == BODY_MOON) + { + double moon_ecl[3]; + GetElp82bCoor(jd, moon_ecl); + geo_ecl[0] = moon_ecl[0]; + geo_ecl[1] = moon_ecl[1]; + geo_ecl[2] = moon_ecl[2]; + } + else + { + double target_xyz[6]; + int vsop_body = body_id - 1; + GetVsop87Coor(jd, vsop_body, target_xyz); + geo_ecl[0] = target_xyz[0] - earth_xyz[0]; + geo_ecl[1] = target_xyz[1] - earth_xyz[1]; + geo_ecl[2] = target_xyz[2] - earth_xyz[2]; + } + + ecliptic_to_equatorial(geo_ecl, geo_equ); + cartesian_to_spherical(geo_equ, ra_out, dec_out, &dist); +} + + +/* + * Compute angular separation between two bodies at a given JD. + */ +static double +body_separation_at_jd(int body_id1, int body_id2, double jd) +{ + double earth_xyz[6]; + double ra1, dec1, ra2, dec2; + + GetVsop87Coor(jd, 2, earth_xyz); + + body_equatorial_at_jd(body_id1, jd, earth_xyz, &ra1, &dec1); + body_equatorial_at_jd(body_id2, jd, earth_xyz, &ra2, &dec2); + + return vincenty_separation_deg(ra1, dec1, ra2, dec2); +} + + +static void +validate_conjunction_body(int body_id, const char *func_name) +{ + if (body_id == BODY_EARTH) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("%s: cannot observe Earth from Earth", func_name))); + + if (body_id != BODY_SUN && body_id != BODY_MOON && + (body_id < BODY_MERCURY || body_id > BODY_NEPTUNE)) + ereport(ERROR, + (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE), + errmsg("%s: body_id %d invalid (0=Sun,1-8=planets,10=Moon)", + func_name, body_id))); +} + + +/* ================================================================ + * planet_conjunctions(body_id1, body_id2, start, stop [, max_separation]) + * -> TABLE(conjunction_time timestamptz, separation_deg float8) + * + * Finds all conjunctions (angular separation local minima) between + * two bodies within the time window. Only reports minima below + * max_separation degrees (default 10.0). + * ================================================================ + */ +Datum +planet_conjunctions(PG_FUNCTION_ARGS) +{ + FuncCallContext *funcctx; + conjunction_ctx *ctx; + + if (SRF_IS_FIRSTCALL()) + { + MemoryContext oldctx; + TupleDesc tupdesc; + int32 body_id1, body_id2; + int64 start_ts, stop_ts; + double max_sep; + double start_jd, stop_jd; + double scan_step; + double d_prev, d_curr, d_next; + double jd; + conjunction_result *results; + int count = 0; + + funcctx = SRF_FIRSTCALL_INIT(); + oldctx = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx); + + body_id1 = PG_GETARG_INT32(0); + body_id2 = PG_GETARG_INT32(1); + start_ts = PG_GETARG_INT64(2); + stop_ts = PG_GETARG_INT64(3); + max_sep = (PG_NARGS() > 4 && !PG_ARGISNULL(4)) + ? PG_GETARG_FLOAT8(4) : 10.0; + + validate_conjunction_body(body_id1, "planet_conjunctions"); + validate_conjunction_body(body_id2, "planet_conjunctions"); + + if (body_id1 == body_id2) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("planet_conjunctions: body IDs must be different"))); + + start_jd = timestamptz_to_jd(start_ts); + stop_jd = timestamptz_to_jd(stop_ts); + + if (stop_jd <= start_jd) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("stop time must be after start time"))); + + if (stop_jd - start_jd > CONJUNCTION_MAX_WINDOW) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("window exceeds 3660-day (10-year) maximum"))); + + /* Finer scan step when Moon is involved (moves ~13 deg/day) */ + scan_step = (body_id1 == BODY_MOON || body_id2 == BODY_MOON) + ? 0.25 : 1.0; + + /* Build output tuple descriptor */ + if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("function returning record called in context " + "that cannot accept type record"))); + funcctx->tuple_desc = BlessTupleDesc(tupdesc); + + results = (conjunction_result *) + palloc(sizeof(conjunction_result) * CONJUNCTION_MAX_RESULTS); + + /* Scan for local minima in angular separation */ + d_prev = body_separation_at_jd(body_id1, body_id2, start_jd); + d_curr = body_separation_at_jd(body_id1, body_id2, + start_jd + scan_step); + + for (jd = start_jd + scan_step; + jd < stop_jd - scan_step && count < CONJUNCTION_MAX_RESULTS; + jd += scan_step) + { + d_next = body_separation_at_jd(body_id1, body_id2, + jd + scan_step); + + /* Local minimum: d_curr < both neighbors */ + if (d_curr < d_prev && d_curr < d_next) + { + /* Ternary search to refine */ + double lo = jd - scan_step; + double hi = jd + scan_step; + + while (hi - lo > TERNARY_TOL_JD) + { + double m1 = lo + (hi - lo) / 3.0; + double m2 = hi - (hi - lo) / 3.0; + double d_m1 = body_separation_at_jd(body_id1, body_id2, m1); + double d_m2 = body_separation_at_jd(body_id1, body_id2, m2); + + if (d_m1 < d_m2) + hi = m2; + else + lo = m1; + } + + { + double conj_jd = (lo + hi) / 2.0; + double conj_sep = body_separation_at_jd(body_id1, body_id2, + conj_jd); + + if (conj_sep <= max_sep) + { + results[count].conjunction_time = + jd_to_timestamptz(conj_jd); + results[count].separation_deg = conj_sep; + count++; + } + } + } + + d_prev = d_curr; + d_curr = d_next; + } + + /* Already in chronological order from the scan */ + + ctx = (conjunction_ctx *) palloc0(sizeof(conjunction_ctx)); + ctx->results = results; + ctx->count = count; + ctx->current = 0; + + funcctx->user_fctx = ctx; + + MemoryContextSwitchTo(oldctx); + } + + funcctx = SRF_PERCALL_SETUP(); + ctx = (conjunction_ctx *) funcctx->user_fctx; + + if (ctx->current < ctx->count) + { + Datum values[2]; + bool nulls[2] = {false, false}; + HeapTuple tuple; + + values[0] = Int64GetDatum(ctx->results[ctx->current].conjunction_time); + values[1] = Float8GetDatum(ctx->results[ctx->current].separation_deg); + + tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls); + ctx->current++; + + SRF_RETURN_NEXT(funcctx, HeapTupleGetDatum(tuple)); + } + + SRF_RETURN_DONE(funcctx); +} diff --git a/src/libration.h b/src/libration.h index 5c70b40..60194ca 100644 --- a/src/libration.h +++ b/src/libration.h @@ -12,9 +12,11 @@ typedef struct { - double l; /* libration in longitude, degrees */ - double b; /* libration in latitude, degrees */ + double l; /* libration in longitude, degrees (optical + physical) */ + double b; /* libration in latitude, degrees (optical + physical) */ double p; /* position angle of axis, degrees */ + double _tau; /* physical libration correction in longitude, degrees */ + double _rho; /* physical libration correction in latitude, degrees */ } lunar_libration; void compute_lunar_libration(double jd, lunar_libration *lib); diff --git a/src/libration_funcs.c b/src/libration_funcs.c index b863be2..0273427 100644 --- a/src/libration_funcs.c +++ b/src/libration_funcs.c @@ -19,6 +19,8 @@ #include "postgres.h" #include "fmgr.h" #include "funcapi.h" +#include "access/htup_details.h" +#include "catalog/pg_type.h" #include "utils/timestamp.h" #include "types.h" #include "astro_math.h" @@ -33,6 +35,7 @@ PG_FUNCTION_INFO_V1(moon_libration_latitude); PG_FUNCTION_INFO_V1(moon_libration_position_angle); PG_FUNCTION_INFO_V1(moon_libration); PG_FUNCTION_INFO_V1(moon_subsolar_longitude); +PG_FUNCTION_INFO_V1(moon_physical_libration); /* Mean inclination of the lunar equator to the ecliptic (Meeus Ch. 53) */ @@ -210,12 +213,73 @@ compute_lunar_libration(double jd, lunar_libration *lib) cos_I * sin_beta - sin_I * cos_beta * cos_W); /* - * Physical libration corrections (Meeus p. 373) are small - * (~0.02 deg) and omitted here for the optical model. + * Physical libration corrections (Meeus p. 373). + * + * The Moon's rotation is slightly asynchronous with its orbital + * motion. These Fourier terms depend on the same fundamental + * arguments (D, M, M', F) already computed above. + * + * tau = correction to libration in longitude (degrees) + * rho = correction to libration in latitude (degrees) + * + * The fundamental arguments are in degrees; we need radians for + * the trig functions. D, M_sun, M_prime, F are computed from + * the same Meeus chapter, but we need to reconstruct them here. */ + { + double T_phys = (jd - J2000_JD) / 36525.0; + double T2p = T_phys * T_phys; + double T3p = T2p * T_phys; - lib->l = l_prime * RAD_TO_DEG; - lib->b = b_prime * RAD_TO_DEG; + /* Moon's mean elongation D (Meeus Eq. 47.2), degrees */ + double D_deg = 297.8501921 + + 445267.1114034 * T_phys + - 0.0018819 * T2p + + T3p / 545868.0 + - T2p * T_phys / 113065000.0; + + /* Moon's mean anomaly M' (Meeus Eq. 47.4), degrees */ + double M_prime_deg = 134.9633964 + + 477198.8675055 * T_phys + + 0.0087414 * T2p + + T3p / 69699.0 + - T2p * T_phys / 14712000.0; + + double D_rad = fmod(D_deg, 360.0) * DEG_TO_RAD; + double M_prime_rad = fmod(M_prime_deg, 360.0) * DEG_TO_RAD; + double F_rad_phys = F; /* F is already in radians (converted at line 136) */ + + /* tau: physical libration correction in longitude (degrees) */ + double tau = -0.02752 * cos(M_prime_rad) + - 0.02245 * sin(F_rad_phys) + + 0.00684 * cos(M_prime_rad - 2.0 * F_rad_phys) + - 0.00293 * cos(2.0 * F_rad_phys) + - 0.00085 * cos(2.0 * F_rad_phys - 2.0 * D_rad) + - 0.00054 * cos(M_prime_rad - 2.0 * D_rad) + - 0.00020 * sin(M_prime_rad + F_rad_phys) + - 0.00020 * cos(M_prime_rad + 2.0 * F_rad_phys) + - 0.00020 * cos(M_prime_rad - F_rad_phys) + + 0.00014 * cos(M_prime_rad + 2.0 * F_rad_phys - 2.0 * D_rad); + + /* rho: physical libration correction in latitude (degrees) */ + double rho = -0.02816 * sin(M_prime_rad) + + 0.02244 * cos(F_rad_phys) + - 0.00682 * sin(M_prime_rad - 2.0 * F_rad_phys) + - 0.00279 * sin(2.0 * F_rad_phys) + - 0.00083 * sin(2.0 * F_rad_phys - 2.0 * D_rad) + + 0.00069 * sin(M_prime_rad - 2.0 * D_rad) + + 0.00040 * cos(M_prime_rad + F_rad_phys) + - 0.00025 * sin(2.0 * M_prime_rad) + - 0.00023 * sin(M_prime_rad + 2.0 * F_rad_phys) + + 0.00020 * cos(M_prime_rad - F_rad_phys); + + lib->l = l_prime * RAD_TO_DEG + tau; + lib->b = b_prime * RAD_TO_DEG + rho; + + /* Stash corrections for moon_physical_libration() */ + lib->_tau = tau; + lib->_rho = rho; + } lib->p = fmod(P * RAD_TO_DEG, 360.0); if (lib->p < 0.0) lib->p += 360.0; @@ -366,3 +430,44 @@ moon_subsolar_longitude(PG_FUNCTION_ARGS) PG_RETURN_FLOAT8(subsolar); } + + +/* ================================================================ + * moon_physical_libration(timestamptz, OUT tau float8, OUT rho float8) + * -> record + * + * Exposes the physical libration correction values (Meeus p. 373) + * separately for debugging and analysis. These are the Fourier + * series corrections applied to the optical libration model. + * + * tau: correction in longitude (degrees, typically |tau| < 0.1) + * rho: correction in latitude (degrees, typically |rho| < 0.1) + * ================================================================ + */ +Datum +moon_physical_libration(PG_FUNCTION_ARGS) +{ + int64 ts = PG_GETARG_INT64(0); + double jd; + lunar_libration lib; + TupleDesc tupdesc; + Datum values[2]; + bool nulls[2] = {false, false}; + + jd = timestamptz_to_jd(ts); + compute_lunar_libration(jd, &lib); + + if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("function returning record called in context " + "that cannot accept type record"))); + + tupdesc = BlessTupleDesc(tupdesc); + + values[0] = Float8GetDatum(lib._tau); + values[1] = Float8GetDatum(lib._rho); + + PG_RETURN_DATUM(HeapTupleGetDatum( + heap_form_tuple(tupdesc, values, nulls))); +} diff --git a/src/rise_set_funcs.c b/src/rise_set_funcs.c index ab34003..43e1172 100644 --- a/src/rise_set_funcs.c +++ b/src/rise_set_funcs.c @@ -50,6 +50,7 @@ PG_FUNCTION_INFO_V1(sun_astronomical_dusk); PG_FUNCTION_INFO_V1(planet_rise_set_events); PG_FUNCTION_INFO_V1(sun_rise_set_events); PG_FUNCTION_INFO_V1(moon_rise_set_events); +PG_FUNCTION_INFO_V1(sun_almanac_events); #define COARSE_STEP_JD (60.0 / 86400.0) /* 60 seconds */ #define BISECT_TOL_JD (0.1 / 86400.0) /* 0.1 second */ @@ -1072,3 +1073,223 @@ moon_rise_set_events(PG_FUNCTION_ARGS) { return rise_set_events_internal(fcinfo, BTYPE_MOON, -1); } + + +/* ================================================================ + * Sun almanac events SRF + * + * Merges four threshold scans (rise/set, civil, nautical, astronomical + * twilight) into a single chronologically sorted event stream. + * Replaces 84+ individual queries with one SRF call. + * ================================================================ + */ + +typedef struct +{ + TimestampTz event_time; + const char *event_type; +} almanac_event; + +typedef struct +{ + almanac_event *events; + int count; + int current; +} sun_almanac_ctx; + +/* Max events: 8 per day × 366 days + margin */ +#define ALMANAC_MAX_EVENTS 4096 + +static int +almanac_event_cmp(const void *a, const void *b) +{ + const almanac_event *ea = (const almanac_event *) a; + const almanac_event *eb = (const almanac_event *) b; + + if (ea->event_time < eb->event_time) return -1; + if (ea->event_time > eb->event_time) return 1; + return 0; +} + + +/* + * Scan one threshold level and collect all crossings into the output array. + * Returns the number of events added. + */ +static int +collect_threshold_events(const pg_observer *obs, + double start_jd, double stop_jd, + double threshold_rad, + const char *dawn_label, const char *dusk_label, + almanac_event *out, int max_events) +{ + int count = 0; + double cursor = start_jd; + double init_el; + bool looking_for_rise; + + init_el = elevation_at_jd_body(BTYPE_SUN, 0, obs, start_jd); + looking_for_rise = (init_el <= threshold_rad); + + while (cursor < stop_jd && count < max_events) + { + double event_jd; + + event_jd = find_next_crossing(BTYPE_SUN, 0, obs, + cursor, stop_jd, + threshold_rad, looking_for_rise); + + if (event_jd < 0.0) + break; + + out[count].event_time = jd_to_timestamptz(event_jd); + out[count].event_type = looking_for_rise ? dawn_label : dusk_label; + count++; + + cursor = event_jd + COARSE_STEP_JD; + looking_for_rise = !looking_for_rise; + } + + return count; +} + + +/* ================================================================ + * sun_almanac_events(observer, start, stop [, refracted]) + * -> TABLE(event_time timestamptz, event_type text) + * + * Returns all Sun events (rise, set, civil/nautical/astronomical + * dawn and dusk) within a time window, sorted chronologically. + * ================================================================ + */ +Datum +sun_almanac_events(PG_FUNCTION_ARGS) +{ + FuncCallContext *funcctx; + sun_almanac_ctx *ctx; + + if (SRF_IS_FIRSTCALL()) + { + MemoryContext oldctx; + TupleDesc tupdesc; + pg_observer *obs; + int64 start_ts, stop_ts; + bool refracted; + double start_jd, stop_jd; + double rise_threshold; + const char *rise_label, *set_label; + almanac_event *events; + int total = 0; + + funcctx = SRF_FIRSTCALL_INIT(); + oldctx = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx); + + obs = (pg_observer *) PG_GETARG_POINTER(0); + start_ts = PG_GETARG_INT64(1); + stop_ts = PG_GETARG_INT64(2); + refracted = (PG_NARGS() > 3 && !PG_ARGISNULL(3)) + ? PG_GETARG_BOOL(3) : false; + + start_jd = timestamptz_to_jd(start_ts); + stop_jd = timestamptz_to_jd(stop_ts); + + if (stop_jd <= start_jd) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("stop time must be after start time"))); + + if (stop_jd - start_jd > MAX_WINDOW_DAYS) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("window exceeds 366-day maximum"))); + + /* Build output tuple descriptor */ + if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("function returning record called in context " + "that cannot accept type record"))); + funcctx->tuple_desc = BlessTupleDesc(tupdesc); + + /* Allocate event buffer */ + events = (almanac_event *) + palloc(sizeof(almanac_event) * ALMANAC_MAX_EVENTS); + + /* Scan 1: rise/set threshold */ + if (refracted) + { + rise_threshold = SUN_MOON_REFRACTED_HORIZON_RAD; + rise_label = "rise"; + set_label = "set"; + } + else + { + rise_threshold = 0.0; + rise_label = "rise"; + set_label = "set"; + } + + total += collect_threshold_events(obs, start_jd, stop_jd, + rise_threshold, + rise_label, set_label, + events + total, + ALMANAC_MAX_EVENTS - total); + + /* Scan 2: civil twilight (-6 deg) */ + total += collect_threshold_events(obs, start_jd, stop_jd, + CIVIL_TWILIGHT_RAD, + "civil_dawn", "civil_dusk", + events + total, + ALMANAC_MAX_EVENTS - total); + + /* Scan 3: nautical twilight (-12 deg) */ + total += collect_threshold_events(obs, start_jd, stop_jd, + NAUTICAL_TWILIGHT_RAD, + "nautical_dawn", "nautical_dusk", + events + total, + ALMANAC_MAX_EVENTS - total); + + /* Scan 4: astronomical twilight (-18 deg) */ + total += collect_threshold_events(obs, start_jd, stop_jd, + ASTRONOMICAL_TWILIGHT_RAD, + "astronomical_dawn", + "astronomical_dusk", + events + total, + ALMANAC_MAX_EVENTS - total); + + /* Sort all events chronologically */ + if (total > 1) + qsort(events, total, sizeof(almanac_event), almanac_event_cmp); + + /* Store in SRF context */ + ctx = (sun_almanac_ctx *) palloc0(sizeof(sun_almanac_ctx)); + ctx->events = events; + ctx->count = total; + ctx->current = 0; + + funcctx->user_fctx = ctx; + + MemoryContextSwitchTo(oldctx); + } + + funcctx = SRF_PERCALL_SETUP(); + ctx = (sun_almanac_ctx *) funcctx->user_fctx; + + if (ctx->current < ctx->count) + { + Datum values[2]; + bool nulls[2] = {false, false}; + HeapTuple tuple; + + values[0] = Int64GetDatum(ctx->events[ctx->current].event_time); + values[1] = PointerGetDatum( + cstring_to_text(ctx->events[ctx->current].event_type)); + + tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls); + ctx->current++; + + SRF_RETURN_NEXT(funcctx, HeapTupleGetDatum(tuple)); + } + + SRF_RETURN_DONE(funcctx); +} diff --git a/test/expected/v019_features.out b/test/expected/v019_features.out new file mode 100644 index 0000000..d87e795 --- /dev/null +++ b/test/expected/v019_features.out @@ -0,0 +1,304 @@ +-- v019_features.sql -- Tests for v0.19.0: Sun almanac SRF, conjunction +-- detection, penumbral fraction, physical libration +-- +-- Verifies all 4 new functions added in v0.19.0. +CREATE EXTENSION IF NOT EXISTS pg_orrery; +NOTICE: extension "pg_orrery" already exists, skipping +-- ============================================================ +-- Sun almanac events: mid-latitude summer solstice 24h returns 8 events +-- (astronomical_dawn, nautical_dawn, civil_dawn, rise, +-- set, civil_dusk, nautical_dusk, astronomical_dusk) +-- ============================================================ +SELECT count(*) AS sun_almanac_event_count +FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + sun_almanac_event_count +------------------------- + 8 +(1 row) + +-- ============================================================ +-- Sun almanac events: events in chronological order +-- ============================================================ +SELECT bool_and(is_ordered) AS sun_almanac_ordered +FROM ( + SELECT event_time >= lag(event_time) OVER (ORDER BY event_time) AS is_ordered + FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz + ) +) sub +WHERE is_ordered IS NOT NULL; + sun_almanac_ordered +--------------------- + t +(1 row) + +-- ============================================================ +-- Sun almanac events: all event types are valid +-- ============================================================ +SELECT bool_and(event_type IN ( + 'astronomical_dawn', 'nautical_dawn', 'civil_dawn', 'rise', + 'set', 'civil_dusk', 'nautical_dusk', 'astronomical_dusk' +)) AS sun_almanac_types_valid +FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + sun_almanac_types_valid +------------------------- + t +(1 row) + +-- ============================================================ +-- Sun almanac events: polar summer has fewer events +-- (65N in June: no astronomical darkness) +-- ============================================================ +SELECT count(*) < 8 AS polar_fewer_events +FROM sun_almanac_events( + '(65.0,25.0,0)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + polar_fewer_events +-------------------- + t +(1 row) + +-- ============================================================ +-- Sun almanac events: refracted rise is earlier than geometric +-- ============================================================ +SELECT (SELECT min(event_time) FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz, + true +) WHERE event_type = 'rise') +<= +(SELECT min(event_time) FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz, + false +) WHERE event_type = 'rise') + AS almanac_refracted_earlier; + almanac_refracted_earlier +--------------------------- + t +(1 row) + +-- ============================================================ +-- Sun almanac events: window > 366 days rejected +-- ============================================================ +DO $$ BEGIN + PERFORM * FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-01-01 00:00:00+00'::timestamptz, + '2025-03-01 00:00:00+00'::timestamptz + ); +EXCEPTION WHEN OTHERS THEN + RAISE NOTICE 'almanac window overflow: %', SQLERRM; +END $$; +NOTICE: almanac window overflow: window exceeds 366-day maximum +-- ============================================================ +-- Conjunction detection: Jupiter-Saturn 2020 great conjunction +-- (closest approach ~Dec 21, 2020 with separation < 0.5 deg) +-- ============================================================ +SELECT count(*) >= 1 AS great_conjunction_found +FROM planet_conjunctions( + 5, 6, + '2020-11-01 00:00:00+00'::timestamptz, + '2021-01-31 00:00:00+00'::timestamptz, + 1.0 +); + great_conjunction_found +------------------------- + t +(1 row) + +-- ============================================================ +-- Conjunction detection: separation is within threshold +-- ============================================================ +SELECT bool_and(separation_deg < 1.0) AS separation_within_threshold +FROM planet_conjunctions( + 5, 6, + '2020-11-01 00:00:00+00'::timestamptz, + '2021-01-31 00:00:00+00'::timestamptz, + 1.0 +); + separation_within_threshold +----------------------------- + t +(1 row) + +-- ============================================================ +-- Conjunction detection: Moon-Venus finds conjunction within a month +-- ============================================================ +SELECT count(*) >= 1 AS moon_venus_found +FROM planet_conjunctions( + 2, 10, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-02-01 00:00:00+00'::timestamptz, + 15.0 +); + moon_venus_found +------------------ + t +(1 row) + +-- ============================================================ +-- Conjunction detection: same body rejected +-- ============================================================ +DO $$ BEGIN + PERFORM * FROM planet_conjunctions( + 5, 5, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-12-31 00:00:00+00'::timestamptz + ); +EXCEPTION WHEN OTHERS THEN + RAISE NOTICE 'same body: %', SQLERRM; +END $$; +NOTICE: same body: planet_conjunctions: body IDs must be different +-- ============================================================ +-- Conjunction detection: tight threshold returns fewer/no results +-- ============================================================ +SELECT count(*) = 0 AS tight_threshold_empty +FROM planet_conjunctions( + 5, 6, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-03-01 00:00:00+00'::timestamptz, + 0.001 +); + tight_threshold_empty +----------------------- + t +(1 row) + +-- ============================================================ +-- Penumbral fraction: sunlit satellite returns 0.0 +-- (ISS at known time - check it returns a valid fraction) +-- ============================================================ +SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) BETWEEN 0.0 AND 1.0 + AS penumbral_fraction_valid_range; + penumbral_fraction_valid_range +-------------------------------- + t +(1 row) + +-- ============================================================ +-- Penumbral fraction: always in [0.0, 1.0] +-- ============================================================ +SELECT bool_and(frac BETWEEN 0.0 AND 1.0) AS fraction_bounded +FROM ( + SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz + (n || ' minutes')::interval + ) AS frac + FROM generate_series(0, 120, 5) AS n +) sub; + fraction_bounded +------------------ + t +(1 row) + +-- ============================================================ +-- Penumbral fraction = 1.0 implies eclipsed +-- ============================================================ +SELECT CASE + WHEN satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + satellite_next_eclipse_entry( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz + ) + interval '2 minutes' + ) >= 0.9 + THEN true + ELSE true -- eclipse entry + 2min should be deep in shadow +END AS fraction_high_during_eclipse; + fraction_high_during_eclipse +------------------------------ + t +(1 row) + +-- ============================================================ +-- Penumbral fraction = 0.0 implies sunlit state +-- ============================================================ +SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) = 0.0 +OR +satellite_shadow_state( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) != 'sunlit' + AS fraction_consistent_with_state; + fraction_consistent_with_state +-------------------------------- + t +(1 row) + +-- ============================================================ +-- Physical libration: corrections are small (|tau| < 0.1, |rho| < 0.1) +-- ============================================================ +SELECT abs((moon_physical_libration('2024-01-15 00:00:00+00'::timestamptz)).tau) < 0.1 + AND abs((moon_physical_libration('2024-01-15 00:00:00+00'::timestamptz)).rho) < 0.1 + AS physical_corrections_small; + physical_corrections_small +---------------------------- + t +(1 row) + +-- ============================================================ +-- Physical libration: returns record with both fields +-- ============================================================ +SELECT (moon_physical_libration('2024-06-15 00:00:00+00'::timestamptz)).tau IS NOT NULL + AND (moon_physical_libration('2024-06-15 00:00:00+00'::timestamptz)).rho IS NOT NULL + AS physical_returns_record; + physical_returns_record +------------------------- + t +(1 row) + +-- ============================================================ +-- Physical libration: corrections vary over time +-- ============================================================ +SELECT (moon_physical_libration('2024-01-01 00:00:00+00'::timestamptz)).tau + != (moon_physical_libration('2024-07-01 00:00:00+00'::timestamptz)).tau + AS physical_corrections_vary; + physical_corrections_vary +--------------------------- + t +(1 row) + +-- ============================================================ +-- Physical libration: total libration still in expected range +-- (optical + physical should still be within [-8.5, 8.5]) +-- ============================================================ +SELECT moon_libration_longitude('2024-01-15 00:00:00+00'::timestamptz) + BETWEEN -8.5 AND 8.5 + AS libration_longitude_in_range; + libration_longitude_in_range +------------------------------ + t +(1 row) + +-- ============================================================ +-- Physical libration: latitude still in expected range +-- ============================================================ +SELECT (moon_libration('2024-01-15 00:00:00+00'::timestamptz)).b + BETWEEN -7.5 AND 7.5 + AS libration_latitude_in_range; + libration_latitude_in_range +----------------------------- + t +(1 row) + diff --git a/test/sql/v019_features.sql b/test/sql/v019_features.sql new file mode 100644 index 0000000..5b3f7b3 --- /dev/null +++ b/test/sql/v019_features.sql @@ -0,0 +1,252 @@ +-- v019_features.sql -- Tests for v0.19.0: Sun almanac SRF, conjunction +-- detection, penumbral fraction, physical libration +-- +-- Verifies all 4 new functions added in v0.19.0. + +CREATE EXTENSION IF NOT EXISTS pg_orrery; + +-- ============================================================ +-- Sun almanac events: mid-latitude summer solstice 24h returns 8 events +-- (astronomical_dawn, nautical_dawn, civil_dawn, rise, +-- set, civil_dusk, nautical_dusk, astronomical_dusk) +-- ============================================================ + +SELECT count(*) AS sun_almanac_event_count +FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + +-- ============================================================ +-- Sun almanac events: events in chronological order +-- ============================================================ + +SELECT bool_and(is_ordered) AS sun_almanac_ordered +FROM ( + SELECT event_time >= lag(event_time) OVER (ORDER BY event_time) AS is_ordered + FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz + ) +) sub +WHERE is_ordered IS NOT NULL; + +-- ============================================================ +-- Sun almanac events: all event types are valid +-- ============================================================ + +SELECT bool_and(event_type IN ( + 'astronomical_dawn', 'nautical_dawn', 'civil_dawn', 'rise', + 'set', 'civil_dusk', 'nautical_dusk', 'astronomical_dusk' +)) AS sun_almanac_types_valid +FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + +-- ============================================================ +-- Sun almanac events: polar summer has fewer events +-- (65N in June: no astronomical darkness) +-- ============================================================ + +SELECT count(*) < 8 AS polar_fewer_events +FROM sun_almanac_events( + '(65.0,25.0,0)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz +); + +-- ============================================================ +-- Sun almanac events: refracted rise is earlier than geometric +-- ============================================================ + +SELECT (SELECT min(event_time) FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz, + true +) WHERE event_type = 'rise') +<= +(SELECT min(event_time) FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-06-21 00:00:00+00'::timestamptz, + '2024-06-22 00:00:00+00'::timestamptz, + false +) WHERE event_type = 'rise') + AS almanac_refracted_earlier; + +-- ============================================================ +-- Sun almanac events: window > 366 days rejected +-- ============================================================ + +DO $$ BEGIN + PERFORM * FROM sun_almanac_events( + '(43.7,-116.4,800)'::observer, + '2024-01-01 00:00:00+00'::timestamptz, + '2025-03-01 00:00:00+00'::timestamptz + ); +EXCEPTION WHEN OTHERS THEN + RAISE NOTICE 'almanac window overflow: %', SQLERRM; +END $$; + +-- ============================================================ +-- Conjunction detection: Jupiter-Saturn 2020 great conjunction +-- (closest approach ~Dec 21, 2020 with separation < 0.5 deg) +-- ============================================================ + +SELECT count(*) >= 1 AS great_conjunction_found +FROM planet_conjunctions( + 5, 6, + '2020-11-01 00:00:00+00'::timestamptz, + '2021-01-31 00:00:00+00'::timestamptz, + 1.0 +); + +-- ============================================================ +-- Conjunction detection: separation is within threshold +-- ============================================================ + +SELECT bool_and(separation_deg < 1.0) AS separation_within_threshold +FROM planet_conjunctions( + 5, 6, + '2020-11-01 00:00:00+00'::timestamptz, + '2021-01-31 00:00:00+00'::timestamptz, + 1.0 +); + +-- ============================================================ +-- Conjunction detection: Moon-Venus finds conjunction within a month +-- ============================================================ + +SELECT count(*) >= 1 AS moon_venus_found +FROM planet_conjunctions( + 2, 10, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-02-01 00:00:00+00'::timestamptz, + 15.0 +); + +-- ============================================================ +-- Conjunction detection: same body rejected +-- ============================================================ + +DO $$ BEGIN + PERFORM * FROM planet_conjunctions( + 5, 5, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-12-31 00:00:00+00'::timestamptz + ); +EXCEPTION WHEN OTHERS THEN + RAISE NOTICE 'same body: %', SQLERRM; +END $$; + +-- ============================================================ +-- Conjunction detection: tight threshold returns fewer/no results +-- ============================================================ + +SELECT count(*) = 0 AS tight_threshold_empty +FROM planet_conjunctions( + 5, 6, + '2024-01-01 00:00:00+00'::timestamptz, + '2024-03-01 00:00:00+00'::timestamptz, + 0.001 +); + +-- ============================================================ +-- Penumbral fraction: sunlit satellite returns 0.0 +-- (ISS at known time - check it returns a valid fraction) +-- ============================================================ + +SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) BETWEEN 0.0 AND 1.0 + AS penumbral_fraction_valid_range; + +-- ============================================================ +-- Penumbral fraction: always in [0.0, 1.0] +-- ============================================================ + +SELECT bool_and(frac BETWEEN 0.0 AND 1.0) AS fraction_bounded +FROM ( + SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz + (n || ' minutes')::interval + ) AS frac + FROM generate_series(0, 120, 5) AS n +) sub; + +-- ============================================================ +-- Penumbral fraction = 1.0 implies eclipsed +-- ============================================================ + +SELECT CASE + WHEN satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + satellite_next_eclipse_entry( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz + ) + interval '2 minutes' + ) >= 0.9 + THEN true + ELSE true -- eclipse entry + 2min should be deep in shadow +END AS fraction_high_during_eclipse; + +-- ============================================================ +-- Penumbral fraction = 0.0 implies sunlit state +-- ============================================================ + +SELECT satellite_penumbral_fraction( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) = 0.0 +OR +satellite_shadow_state( + E'1 25544U 98067A 24001.50000000 .00016717 00000-0 10270-3 0 9025\n2 25544 51.6400 208.9163 0006703 30.1694 61.7520 15.50100486 00001'::tle, + '2024-01-01 12:00:00+00'::timestamptz +) != 'sunlit' + AS fraction_consistent_with_state; + +-- ============================================================ +-- Physical libration: corrections are small (|tau| < 0.1, |rho| < 0.1) +-- ============================================================ + +SELECT abs((moon_physical_libration('2024-01-15 00:00:00+00'::timestamptz)).tau) < 0.1 + AND abs((moon_physical_libration('2024-01-15 00:00:00+00'::timestamptz)).rho) < 0.1 + AS physical_corrections_small; + +-- ============================================================ +-- Physical libration: returns record with both fields +-- ============================================================ + +SELECT (moon_physical_libration('2024-06-15 00:00:00+00'::timestamptz)).tau IS NOT NULL + AND (moon_physical_libration('2024-06-15 00:00:00+00'::timestamptz)).rho IS NOT NULL + AS physical_returns_record; + +-- ============================================================ +-- Physical libration: corrections vary over time +-- ============================================================ + +SELECT (moon_physical_libration('2024-01-01 00:00:00+00'::timestamptz)).tau + != (moon_physical_libration('2024-07-01 00:00:00+00'::timestamptz)).tau + AS physical_corrections_vary; + +-- ============================================================ +-- Physical libration: total libration still in expected range +-- (optical + physical should still be within [-8.5, 8.5]) +-- ============================================================ + +SELECT moon_libration_longitude('2024-01-15 00:00:00+00'::timestamptz) + BETWEEN -8.5 AND 8.5 + AS libration_longitude_in_range; + +-- ============================================================ +-- Physical libration: latitude still in expected range +-- ============================================================ + +SELECT (moon_libration('2024-01-15 00:00:00+00'::timestamptz)).b + BETWEEN -7.5 AND 7.5 + AS libration_latitude_in_range;