diff --git a/CLAUDE.md b/CLAUDE.md index c0868c8..977bd03 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, 151 SQL objects (135 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) with status diagnostics, and IAU constellation identification with full name lookup (Roman 1987). +A database orrery — celestial mechanics types and functions for PostgreSQL. Native C extension using PGXS, 162 SQL objects (146 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) with status diagnostics, IAU constellation identification with full name lookup (Roman 1987), twilight dawn/dusk (civil/nautical/astronomical), lunar phase (angle, illumination, name, age), and planet apparent magnitude (Mallama & Hilton 2018). -**Current version:** 0.15.0 +**Current version:** 0.16.0 **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 26 regression test suites +make installcheck PG_CONFIG=/usr/bin/pg_config # Run 27 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 0.15.0) +pg_orrery.control # Extension metadata (version 0.16.0) Makefile # PGXS build + Docker targets sql/ pg_orrery--0.1.0.sql # v0.1.0: satellite types/functions/operators @@ -45,6 +45,7 @@ sql/ pg_orrery--0.13.0.sql # v0.13.0: nutation, make_equatorial, rise/set (141 objects) pg_orrery--0.14.0.sql # v0.14.0: refracted rise/set, constellation ID (147 objects) pg_orrery--0.15.0.sql # v0.15.0: constellation full name, rise/set status (151 objects) + pg_orrery--0.16.0.sql # v0.16.0: twilight, lunar phase, planet magnitude (162 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 @@ -59,6 +60,7 @@ sql/ pg_orrery--0.12.0--0.13.0.sql # Migration: v0.12.0 → v0.13.0 (nutation, make_equatorial, rise/set) pg_orrery--0.13.0--0.14.0.sql # Migration: v0.13.0 → v0.14.0 (refracted rise/set, constellation ID) pg_orrery--0.14.0--0.15.0.sql # Migration: v0.14.0 → v0.15.0 (constellation full name, rise/set status) + pg_orrery--0.15.0--0.16.0.sql # Migration: v0.15.0 → v0.16.0 (twilight, lunar phase, planet magnitude) src/ pg_orrery.c # PG_MODULE_MAGIC + _PG_init() (GUC registration) types.h # All struct definitions + constants + DE body ID mapping @@ -85,9 +87,11 @@ src/ 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 refraction_funcs.c # atmospheric_refraction(), _ext(), topo_elevation_apparent() - rise_set_funcs.c # planet/sun/moon rise/set (geometric + refracted) + rise_set_funcs.c # planet/sun/moon rise/set (geometric + refracted) + twilight dawn/dusk 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() (Mallama & Hilton 2018) 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) @@ -112,7 +116,7 @@ src/ PROVENANCE.md # Vendoring decision, modifications, verification LICENSE # MIT license (Bill Gray / Project Pluto) test/ - sql/ # 26 regression test suites + sql/ # 27 regression test suites expected/ # Expected output data/vallado_518.json # 518 Vallado test vectors (AIAA 2006-6753-Rev1) docs/ @@ -139,7 +143,7 @@ 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 (151 SQL objects) +## Function Domains (162 SQL objects) | Domain | Theory | Key Functions | Count | |--------|--------|---------------|-------| @@ -157,6 +161,9 @@ All types are fixed-size, `STORAGE = plain`, `ALIGNMENT = double`. No TOAST over | 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()` | 15 | +| 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()` | 1 | | Constellation | Roman (1987) CDS VI/42 | `constellation()`, `constellation_full_name()` | 3 | | Diagnostics | -- | `pg_orrery_ephemeris_info()` | 1 | @@ -291,7 +298,7 @@ All numerical logic is byte-identical to upstream. Verified against 518 Vallado ## Testing -26 regression test suites via `make installcheck`: +27 regression test suites via `make installcheck`: | Suite | What it tests | |-------|--------------| @@ -321,10 +328,11 @@ All numerical logic is byte-identical to upstream. Verified against 518 Vallado | rise_set | Planet/Sun/Moon rise/set (geometric + refracted), circumpolar, polar night | | constellation | Roman (1987) boundary lookup, known stars, solar system objects, edge cases | | v015_features | constellation_full_name lookup, rise_set_status diagnostics (circumpolar/never_rises) | +| v016_features | Twilight ordering/offset/polar, lunar phase at known events, planet magnitude ranges/errors | ### PG Version Matrix -Test all 26 regression suites + DE reader unit test across PostgreSQL 14-18 using Docker: +Test all 27 regression suites + DE reader unit test across PostgreSQL 14-18 using Docker: ```bash make test-matrix # Full matrix (PG 14-18) @@ -350,7 +358,7 @@ 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 151 SQL objects incl. DE variants, equatorial GiST, refraction, rise/set, constellation), 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 162 SQL objects incl. DE variants, equatorial GiST, refraction, rise/set, constellation, twilight, lunar phase, planet magnitude), Architecture (Hamilton's principles, constant custody, observation pipeline), Performance (benchmarks). ### Local Development ```bash diff --git a/Makefile b/Makefile index 955a366..6d7e773 100644 --- a/Makefile +++ b/Makefile @@ -13,7 +13,8 @@ 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--0.12.0.sql sql/pg_orrery--0.11.0--0.12.0.sql \ sql/pg_orrery--0.13.0.sql sql/pg_orrery--0.12.0--0.13.0.sql \ sql/pg_orrery--0.14.0.sql sql/pg_orrery--0.13.0--0.14.0.sql \ - sql/pg_orrery--0.15.0.sql sql/pg_orrery--0.14.0--0.15.0.sql + 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 # Our extension C sources OBJS = src/pg_orrery.o src/tle_type.o src/eci_type.o src/observer_type.o \ @@ -32,7 +33,8 @@ OBJS = src/pg_orrery.o src/tle_type.o src/eci_type.o src/observer_type.o \ src/refraction_funcs.o \ src/gist_equatorial.o \ src/rise_set_funcs.o \ - src/constellation_data.o src/constellation_funcs.o + src/constellation_data.o src/constellation_funcs.o \ + src/lunar_phase_funcs.o src/magnitude_funcs.o # Vendored SGP4/SDP4 sources (pure C, from Bill Gray's sat_code, MIT license) SGP4_DIR = src/sgp4 @@ -52,7 +54,8 @@ REGRESS = tle_parse sgp4_propagate coord_transforms pass_prediction gist_index c gist_equatorial v012_features \ v013_features rise_set \ constellation \ - v015_features + v015_features \ + v016_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 fa3fe02..9b863f8 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 = '0.15.0' +default_version = '0.16.0' module_pathname = '$libdir/pg_orrery' relocatable = true diff --git a/sql/pg_orrery--0.15.0--0.16.0.sql b/sql/pg_orrery--0.15.0--0.16.0.sql new file mode 100644 index 0000000..5224cd6 --- /dev/null +++ b/sql/pg_orrery--0.15.0--0.16.0.sql @@ -0,0 +1,79 @@ +-- 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.'; diff --git a/sql/pg_orrery--0.16.0.sql b/sql/pg_orrery--0.16.0.sql new file mode 100644 index 0000000..23d1b70 --- /dev/null +++ b/sql/pg_orrery--0.16.0.sql @@ -0,0 +1,1674 @@ +-- 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.'; diff --git a/src/lunar_phase_funcs.c b/src/lunar_phase_funcs.c new file mode 100644 index 0000000..e029432 --- /dev/null +++ b/src/lunar_phase_funcs.c @@ -0,0 +1,236 @@ +/* + * lunar_phase_funcs.c -- Lunar phase calculations + * + * Phase angle, illumination, phase name, and lunar age from + * VSOP87 Sun + ELP2000-82B Moon positions. + * + * The Sun-Earth-Moon geometry determines phase: + * 1. Earth heliocentric (VSOP87) -> negate -> Sun geocentric + * 2. Moon geocentric ecliptic (ELP2000-82B) + * 3. Elongation = angle between geocentric Sun and Moon + * 4. Cross product z-component distinguishes waxing from waning + */ + +#include "postgres.h" +#include "fmgr.h" +#include "utils/timestamp.h" +#include "utils/builtins.h" +#include "types.h" +#include "astro_math.h" +#include "vsop87.h" +#include "elp82b.h" +#include + +PG_FUNCTION_INFO_V1(moon_phase_angle); +PG_FUNCTION_INFO_V1(moon_illumination); +PG_FUNCTION_INFO_V1(moon_phase_name); +PG_FUNCTION_INFO_V1(moon_age); + +/* Mean synodic month in days (Meeus, Astronomical Algorithms) */ +#define SYNODIC_MONTH 29.530588853 + + +/* + * compute_phase_angle -- Sun-Earth-Moon phase angle in degrees [0, 360) + * + * 0 = new moon (Sun and Moon same direction from Earth) + * 90 = first quarter (waxing) + * 180 = full moon + * 270 = last quarter (waning) + * + * Waxing/waning determined by the z-component of (sun_geo x moon_geo) + * in the ecliptic plane: positive = Moon east of Sun = waxing. + */ +static double +compute_phase_angle(double jd) +{ + double earth_xyz[6]; + double moon_ecl[3]; + double sun_x, sun_y, sun_z; + double moon_x, moon_y, moon_z; + double dot, cross_z; + double sun_r, moon_r; + double elongation, angle; + + /* Earth heliocentric -> Sun geocentric (negate) */ + GetVsop87Coor(jd, 2, earth_xyz); /* VSOP87 body 2 = Earth */ + sun_x = -earth_xyz[0]; + sun_y = -earth_xyz[1]; + sun_z = -earth_xyz[2]; + + /* Moon geocentric ecliptic (AU) */ + GetElp82bCoor(jd, moon_ecl); + moon_x = moon_ecl[0]; + moon_y = moon_ecl[1]; + moon_z = moon_ecl[2]; + + /* Magnitudes for unit-vector dot product */ + sun_r = sqrt(sun_x * sun_x + sun_y * sun_y + sun_z * sun_z); + moon_r = sqrt(moon_x * moon_x + moon_y * moon_y + moon_z * moon_z); + + /* Elongation = angle between geocentric Sun and Moon directions */ + dot = (sun_x * moon_x + sun_y * moon_y + sun_z * moon_z) + / (sun_r * moon_r); + if (dot > 1.0) dot = 1.0; + if (dot < -1.0) dot = -1.0; + elongation = acos(dot); + + /* Cross product z-component: sign determines waxing vs waning */ + cross_z = sun_x * moon_y - sun_y * moon_x; + + /* + * Elongation is already the right quantity: + * elongation 0 = same direction = new moon + * elongation pi = opposite = full moon + * + * acos gives [0, 180]. Use cross_z to extend to [0, 360): + * cross_z > 0: Moon east of Sun (waxing), stays [0, 180) + * cross_z < 0: Moon west of Sun (waning), maps to [180, 360) + */ + angle = elongation * RAD_TO_DEG; + + if (cross_z < 0.0) + angle = 360.0 - angle; + + return angle; +} + + +/* ================================================================ + * moon_phase_angle(timestamptz) -> float8 + * + * Returns the Sun-Earth-Moon phase angle in degrees [0, 360). + * 0 = new moon + * 90 = first quarter + * 180 = full moon + * 270 = last quarter + * ================================================================ + */ +Datum +moon_phase_angle(PG_FUNCTION_ARGS) +{ + int64 ts = PG_GETARG_INT64(0); + double jd; + + jd = timestamptz_to_jd(ts); + + PG_RETURN_FLOAT8(compute_phase_angle(jd)); +} + + +/* ================================================================ + * moon_illumination(timestamptz) -> float8 + * + * Returns the illuminated fraction of the Moon's disk [0.0, 1.0]. + * Uses the elongation between geocentric Sun and Moon directions: + * k = (1 - cos(elongation)) / 2 + * ================================================================ + */ +Datum +moon_illumination(PG_FUNCTION_ARGS) +{ + int64 ts = PG_GETARG_INT64(0); + double jd; + double earth_xyz[6]; + double moon_ecl[3]; + double sun_x, sun_y, sun_z; + double dot; + double sun_r, moon_r; + double elongation, illum; + + jd = timestamptz_to_jd(ts); + + /* Earth heliocentric -> Sun geocentric (negate) */ + GetVsop87Coor(jd, 2, earth_xyz); + sun_x = -earth_xyz[0]; + sun_y = -earth_xyz[1]; + sun_z = -earth_xyz[2]; + + /* Moon geocentric ecliptic */ + GetElp82bCoor(jd, moon_ecl); + + /* Elongation between geocentric Sun and Moon */ + sun_r = sqrt(sun_x * sun_x + sun_y * sun_y + sun_z * sun_z); + moon_r = sqrt(moon_ecl[0] * moon_ecl[0] + + moon_ecl[1] * moon_ecl[1] + + moon_ecl[2] * moon_ecl[2]); + + dot = (sun_x * moon_ecl[0] + sun_y * moon_ecl[1] + sun_z * moon_ecl[2]) + / (sun_r * moon_r); + if (dot > 1.0) dot = 1.0; + if (dot < -1.0) dot = -1.0; + elongation = acos(dot); + + illum = (1.0 - cos(elongation)) / 2.0; + + PG_RETURN_FLOAT8(illum); +} + + +/* ================================================================ + * moon_phase_name(timestamptz) -> text + * + * Returns one of 8 phase names based on phase angle: + * [0, 22.5) or [337.5, 360) -> 'new_moon' + * [22.5, 67.5) -> 'waxing_crescent' + * [67.5, 112.5) -> 'first_quarter' + * [112.5, 157.5) -> 'waxing_gibbous' + * [157.5, 202.5) -> 'full_moon' + * [202.5, 247.5) -> 'waning_gibbous' + * [247.5, 292.5) -> 'last_quarter' + * [292.5, 337.5) -> 'waning_crescent' + * ================================================================ + */ +Datum +moon_phase_name(PG_FUNCTION_ARGS) +{ + int64 ts = PG_GETARG_INT64(0); + double jd; + double angle; + const char *name; + + jd = timestamptz_to_jd(ts); + angle = compute_phase_angle(jd); + + if (angle < 22.5 || angle >= 337.5) + name = "new_moon"; + else if (angle < 67.5) + name = "waxing_crescent"; + else if (angle < 112.5) + name = "first_quarter"; + else if (angle < 157.5) + name = "waxing_gibbous"; + else if (angle < 202.5) + name = "full_moon"; + else if (angle < 247.5) + name = "waning_gibbous"; + else if (angle < 292.5) + name = "last_quarter"; + else + name = "waning_crescent"; + + PG_RETURN_TEXT_P(cstring_to_text(name)); +} + + +/* ================================================================ + * moon_age(timestamptz) -> float8 + * + * Returns the Moon's age in days since the last new moon [0, ~29.53). + * Approximation from phase angle and mean synodic month: + * age = phase_angle / 360 * 29.530588853 + * ================================================================ + */ +Datum +moon_age(PG_FUNCTION_ARGS) +{ + int64 ts = PG_GETARG_INT64(0); + double jd; + double angle, age; + + jd = timestamptz_to_jd(ts); + angle = compute_phase_angle(jd); + age = angle / 360.0 * SYNODIC_MONTH; + + PG_RETURN_FLOAT8(age); +} diff --git a/src/magnitude_funcs.c b/src/magnitude_funcs.c new file mode 100644 index 0000000..77cbc07 --- /dev/null +++ b/src/magnitude_funcs.c @@ -0,0 +1,144 @@ +/* + * magnitude_funcs.c -- Planet apparent visual magnitude + * + * Uses the Mallama & Hilton (2018) magnitude model with + * VSOP87 positions for distances and phase angles. + * + * Reference: Mallama & Hilton, "Computing Apparent Planetary + * Magnitudes for The Astronomical Almanac", A&C vol. 25, 2018. + */ + +#include "postgres.h" +#include "fmgr.h" +#include "utils/timestamp.h" +#include "types.h" +#include "astro_math.h" +#include "vsop87.h" +#include + +PG_FUNCTION_INFO_V1(planet_magnitude); + + +/* + * Planet magnitude parameters -- Mallama & Hilton (2018), simplified. + * + * V(1,0) = absolute magnitude at r=1 AU, delta=1 AU, i=0 deg + * Phase corrections are polynomial fits to i (phase angle in degrees). + * + * We use the linear+quadratic terms which are sufficient for + * phase angles encountered from Earth (typically <180 deg). + * + * Saturn caveat: visual magnitude depends heavily on ring tilt + * (can vary by ~1.5 mag). The simplified model here uses a fixed + * V(1,0) without ring correction. + */ +typedef struct { + double v10; /* V(1,0) */ + double c1; /* coefficient for i */ + double c2; /* coefficient for i^2 */ + double c3; /* coefficient for i^3 (0 if unused) */ +} mag_params; + +static const mag_params planet_mag[] = { + [0] = { 0, 0, 0, 0 }, /* Sun: unused placeholder */ + [1] = { -0.613, 6.328e-2, -1.6336e-3, 0 }, /* Mercury */ + [2] = { -4.384, 1.044e-3, 3.687e-4, 0 }, /* Venus */ + [3] = { 0, 0, 0, 0 }, /* Earth: unused */ + [4] = { -1.601, 2.267e-2, -1.302e-4, 0 }, /* Mars */ + [5] = { -9.395, 3.7e-4, 0, 0 }, /* Jupiter */ + [6] = { -8.95, 0, 0, 0 }, /* Saturn (ring tilt NOT modeled) */ + [7] = { -7.110, 0, 0, 0 }, /* Uranus */ + [8] = { -7.00, 0, 0, 0 }, /* Neptune */ +}; + + +/* + * Compute apparent visual magnitude of a planet from Earth. + * + * Phase angle is the Sun-Planet-Earth angle, computed via the law + * of cosines from three heliocentric/geocentric distances. + */ +static double +compute_planet_magnitude(int body_id, double jd) +{ + double earth_xyz[6], planet_xyz[6]; + double geo[3]; + double r, delta, R; + double cos_i, i_deg; + const mag_params *p; + double V; + int vsop_body = body_id - 1; /* pg_orrery 1-based -> VSOP87 0-based */ + + GetVsop87Coor(jd, 2, earth_xyz); /* Earth (VSOP87 body 2) */ + GetVsop87Coor(jd, vsop_body, planet_xyz); /* target planet */ + + /* Heliocentric distance to planet */ + r = sqrt(planet_xyz[0] * planet_xyz[0] + + planet_xyz[1] * planet_xyz[1] + + planet_xyz[2] * planet_xyz[2]); + + /* Geocentric vector and distance */ + geo[0] = planet_xyz[0] - earth_xyz[0]; + geo[1] = planet_xyz[1] - earth_xyz[1]; + geo[2] = planet_xyz[2] - earth_xyz[2]; + delta = sqrt(geo[0] * geo[0] + geo[1] * geo[1] + geo[2] * geo[2]); + + /* Sun-Earth distance */ + R = sqrt(earth_xyz[0] * earth_xyz[0] + + earth_xyz[1] * earth_xyz[1] + + earth_xyz[2] * earth_xyz[2]); + + /* Phase angle via law of cosines: triangle Sun-Planet-Earth */ + cos_i = (r * r + delta * delta - R * R) / (2.0 * r * delta); + if (cos_i > 1.0) cos_i = 1.0; + if (cos_i < -1.0) cos_i = -1.0; + i_deg = acos(cos_i) * RAD_TO_DEG; + + /* Mallama & Hilton (2018) magnitude formula */ + p = &planet_mag[body_id]; + V = p->v10 + + 5.0 * log10(r * delta) + + p->c1 * i_deg + + p->c2 * i_deg * i_deg + + p->c3 * i_deg * i_deg * i_deg; + + return V; +} + + +/* ================================================================ + * planet_magnitude(body_id int4, timestamptz) -> float8 + * + * Returns the apparent visual magnitude of a planet as seen from + * Earth. Uses Mallama & Hilton (2018) magnitude model. + * + * Body IDs: 1=Mercury, ..., 8=Neptune (not Sun 0, Earth 3, or Moon 10) + * + * NOTE: Saturn magnitude does not account for ring tilt, which + * can vary the apparent magnitude by ~1.5 mag. The returned value + * is approximate for Saturn. + * ================================================================ + */ +Datum +planet_magnitude(PG_FUNCTION_ARGS) +{ + int32 body_id = PG_GETARG_INT32(0); + int64 ts = PG_GETARG_INT64(1); + double jd, mag; + + if (body_id < BODY_MERCURY || body_id > BODY_NEPTUNE) + ereport(ERROR, + (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE), + errmsg("planet_magnitude: body_id %d must be 1-8 (Mercury-Neptune)", + body_id))); + + if (body_id == BODY_EARTH) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot compute magnitude for Earth from Earth"))); + + jd = timestamptz_to_jd(ts); + mag = compute_planet_magnitude(body_id, jd); + + PG_RETURN_FLOAT8(mag); +} diff --git a/src/rise_set_funcs.c b/src/rise_set_funcs.c index 3ef1ddf..e41d4bd 100644 --- a/src/rise_set_funcs.c +++ b/src/rise_set_funcs.c @@ -38,6 +38,12 @@ PG_FUNCTION_INFO_V1(moon_next_set_refracted); PG_FUNCTION_INFO_V1(sun_rise_set_status); PG_FUNCTION_INFO_V1(moon_rise_set_status); PG_FUNCTION_INFO_V1(planet_rise_set_status); +PG_FUNCTION_INFO_V1(sun_civil_dawn); +PG_FUNCTION_INFO_V1(sun_civil_dusk); +PG_FUNCTION_INFO_V1(sun_nautical_dawn); +PG_FUNCTION_INFO_V1(sun_nautical_dusk); +PG_FUNCTION_INFO_V1(sun_astronomical_dawn); +PG_FUNCTION_INFO_V1(sun_astronomical_dusk); #define COARSE_STEP_JD (60.0 / 86400.0) /* 60 seconds */ #define BISECT_TOL_JD (0.1 / 86400.0) /* 0.1 second */ @@ -65,6 +71,11 @@ PG_FUNCTION_INFO_V1(planet_rise_set_status); */ #define REFRACTION_ONLY_HORIZON_RAD (-0.00993) /* -0.569 deg */ +/* Twilight depression angles (geometric Sun center below horizon) */ +#define CIVIL_TWILIGHT_RAD (-0.10472) /* -6.0 deg */ +#define NAUTICAL_TWILIGHT_RAD (-0.20944) /* -12.0 deg */ +#define ASTRONOMICAL_TWILIGHT_RAD (-0.30416) /* -18.0 deg */ + /* ---------------------------------------------------------------- * elevation_at_jd_body -- compute topocentric elevation for a body @@ -684,3 +695,177 @@ planet_rise_set_status(PG_FUNCTION_ARGS) PG_RETURN_TEXT_P(cstring_to_text(status)); } + + +/* ================================================================ + * sun_civil_dawn(observer, timestamptz) -> timestamptz + * + * Returns the next time civil twilight begins (Sun crosses -6 deg + * heading upward). Civil twilight = enough light for outdoor + * activities without artificial lighting. + * ================================================================ + */ +Datum +sun_civil_dawn(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + CIVIL_TWILIGHT_RAD, true); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} + + +/* ================================================================ + * sun_civil_dusk(observer, timestamptz) -> timestamptz + * + * Returns the next time civil twilight ends (Sun crosses -6 deg + * heading downward). After civil dusk, outdoor activities require + * artificial lighting. + * ================================================================ + */ +Datum +sun_civil_dusk(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + CIVIL_TWILIGHT_RAD, false); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} + + +/* ================================================================ + * sun_nautical_dawn(observer, timestamptz) -> timestamptz + * + * Returns the next time nautical twilight begins (Sun crosses -12 deg + * heading upward). At nautical dawn the horizon becomes visible at + * sea and bright stars are still visible for navigation. + * ================================================================ + */ +Datum +sun_nautical_dawn(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + NAUTICAL_TWILIGHT_RAD, true); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} + + +/* ================================================================ + * sun_nautical_dusk(observer, timestamptz) -> timestamptz + * + * Returns the next time nautical twilight ends (Sun crosses -12 deg + * heading downward). After nautical dusk the horizon is no longer + * visible at sea; bright stars remain visible. + * ================================================================ + */ +Datum +sun_nautical_dusk(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + NAUTICAL_TWILIGHT_RAD, false); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} + + +/* ================================================================ + * sun_astronomical_dawn(observer, timestamptz) -> timestamptz + * + * Returns the next time astronomical twilight begins (Sun crosses + * -18 deg heading upward). Before astronomical dawn the sky is + * fully dark — faintest objects are observable. + * ================================================================ + */ +Datum +sun_astronomical_dawn(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + ASTRONOMICAL_TWILIGHT_RAD, true); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} + + +/* ================================================================ + * sun_astronomical_dusk(observer, timestamptz) -> timestamptz + * + * Returns the next time astronomical twilight ends (Sun crosses + * -18 deg heading downward). After astronomical dusk the sky is + * fully dark — faintest objects become observable. + * ================================================================ + */ +Datum +sun_astronomical_dusk(PG_FUNCTION_ARGS) +{ + pg_observer *obs = (pg_observer *) PG_GETARG_POINTER(0); + int64 ts = PG_GETARG_INT64(1); + double start_jd, stop_jd, result_jd; + + start_jd = timestamptz_to_jd(ts); + stop_jd = start_jd + DEFAULT_WINDOW_DAYS; + + result_jd = find_next_crossing(BTYPE_SUN, 0, obs, + start_jd, stop_jd, + ASTRONOMICAL_TWILIGHT_RAD, false); + + if (result_jd < 0.0) + PG_RETURN_NULL(); + + PG_RETURN_TIMESTAMPTZ(jd_to_timestamptz(result_jd)); +} diff --git a/test/expected/v016_features.out b/test/expected/v016_features.out new file mode 100644 index 0000000..daa2b9b --- /dev/null +++ b/test/expected/v016_features.out @@ -0,0 +1,243 @@ +-- v016_features.sql -- Tests for v0.16.0: twilight, lunar phase, planet magnitude +-- +-- Verifies twilight dawn/dusk, lunar phase calculations, +-- and planet apparent magnitude. +CREATE EXTENSION IF NOT EXISTS pg_orrery; +NOTICE: extension "pg_orrery" already exists, skipping +-- ============================================================ +-- Twilight: ordering (astronomical < nautical < civil < sunrise) +-- Eagle, Idaho on the 2024 summer solstice +-- ============================================================ +-- Dawn ordering: astronomical dawn < nautical dawn < civil dawn < sunrise +-- Use midnight MDT (07:00 UTC) so all "next" events land on the same morning +SELECT sun_astronomical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_nautical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS astro_before_nautical; + astro_before_nautical +----------------------- + t +(1 row) + +SELECT sun_nautical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS nautical_before_civil; + nautical_before_civil +----------------------- + t +(1 row) + +SELECT sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_next_rise('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS civil_before_sunrise; + civil_before_sunrise +---------------------- + t +(1 row) + +-- Dusk ordering: sunset < civil dusk < nautical dusk < astronomical dusk +-- Noon MDT (18:00 UTC) ensures all dusk events are still ahead +SELECT sun_next_set('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_civil_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS sunset_before_civil; + sunset_before_civil +--------------------- + t +(1 row) + +SELECT sun_civil_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_nautical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS civil_before_nautical; + civil_before_nautical +----------------------- + t +(1 row) + +SELECT sun_nautical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_astronomical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS nautical_before_astro; + nautical_before_astro +----------------------- + t +(1 row) + +-- ============================================================ +-- Twilight: civil dawn ~30 min before sunrise at mid-latitude +-- ============================================================ +SELECT extract(epoch FROM + sun_next_rise('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + - sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) +) BETWEEN 1200 AND 3600 + AS civil_dawn_reasonable_offset; + civil_dawn_reasonable_offset +------------------------------ + t +(1 row) + +-- ============================================================ +-- Twilight: high latitude summer -- no astronomical darkness +-- At 60N in June, astronomical dusk should be NULL (never gets dark enough) +-- ============================================================ +SELECT sun_astronomical_dusk('(60.0,25.0,0)'::observer, '2024-06-21 00:00:00+00'::timestamptz) IS NULL + AS no_astro_dark_60n_summer; + no_astro_dark_60n_summer +-------------------------- + t +(1 row) + +-- ============================================================ +-- Lunar phase: known full moon (2024-01-25 ~17:54 UTC) +-- Phase angle should be near 180 deg, illumination near 1.0 +-- ============================================================ +SELECT round(moon_phase_angle('2024-01-25 18:00:00+00'::timestamptz)::numeric, 0) + BETWEEN 170 AND 190 + AS full_moon_angle_near_180; + full_moon_angle_near_180 +-------------------------- + t +(1 row) + +SELECT round(moon_illumination('2024-01-25 18:00:00+00'::timestamptz)::numeric, 2) + >= 0.95 + AS full_moon_high_illumination; + full_moon_high_illumination +----------------------------- + t +(1 row) + +SELECT moon_phase_name('2024-01-25 18:00:00+00'::timestamptz) = 'full_moon' + AS full_moon_named; + full_moon_named +----------------- + t +(1 row) + +-- ============================================================ +-- Lunar phase: known new moon (2024-01-11 ~11:57 UTC) +-- Phase angle should be near 0 or 360, illumination near 0 +-- ============================================================ +SELECT moon_illumination('2024-01-11 12:00:00+00'::timestamptz) + < 0.05 + AS new_moon_low_illumination; + new_moon_low_illumination +--------------------------- + t +(1 row) + +SELECT moon_phase_name('2024-01-11 12:00:00+00'::timestamptz) = 'new_moon' + AS new_moon_named; + new_moon_named +---------------- + t +(1 row) + +-- ============================================================ +-- Lunar phase: first quarter (2024-01-18 ~03:53 UTC) +-- Phase angle near 90, illumination near 0.5 +-- ============================================================ +SELECT round(moon_phase_angle('2024-01-18 04:00:00+00'::timestamptz)::numeric, 0) + BETWEEN 80 AND 100 + AS first_quarter_angle_near_90; + first_quarter_angle_near_90 +----------------------------- + t +(1 row) + +SELECT moon_illumination('2024-01-18 04:00:00+00'::timestamptz) + BETWEEN 0.4 AND 0.6 + AS first_quarter_half_illuminated; + first_quarter_half_illuminated +-------------------------------- + t +(1 row) + +SELECT moon_phase_name('2024-01-18 04:00:00+00'::timestamptz) = 'first_quarter' + AS first_quarter_named; + first_quarter_named +--------------------- + t +(1 row) + +-- ============================================================ +-- Moon age: new moon has age near 0, full moon near 14.7 +-- ============================================================ +SELECT moon_age('2024-01-11 12:00:00+00'::timestamptz) < 2.0 + AS new_moon_young; + new_moon_young +---------------- + t +(1 row) + +SELECT moon_age('2024-01-25 18:00:00+00'::timestamptz) + BETWEEN 12.0 AND 17.0 + AS full_moon_age_midcycle; + full_moon_age_midcycle +------------------------ + t +(1 row) + +-- ============================================================ +-- Illumination range: always [0, 1] +-- ============================================================ +SELECT moon_illumination('2024-06-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AND moon_illumination('2024-09-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AND moon_illumination('2024-12-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AS illumination_always_valid; + illumination_always_valid +--------------------------- + t +(1 row) + +-- ============================================================ +-- Planet magnitude: Jupiter should be bright (negative mag) +-- ============================================================ +SELECT planet_magnitude(5, '2024-01-15 00:00:00+00'::timestamptz) < 0.0 + AS jupiter_is_bright; + jupiter_is_bright +------------------- + t +(1 row) + +-- ============================================================ +-- Planet magnitude: Venus is the brightest planet +-- ============================================================ +SELECT planet_magnitude(2, '2024-06-01 12:00:00+00'::timestamptz) + < planet_magnitude(4, '2024-06-01 12:00:00+00'::timestamptz) + AS venus_brighter_than_mars; + venus_brighter_than_mars +-------------------------- + t +(1 row) + +-- ============================================================ +-- Planet magnitude: Neptune is faint (~+7-8) +-- ============================================================ +SELECT planet_magnitude(8, '2024-01-15 00:00:00+00'::timestamptz) > 7.0 + AS neptune_is_faint; + neptune_is_faint +------------------ + t +(1 row) + +-- ============================================================ +-- Planet magnitude: all planets return finite values +-- ============================================================ +SELECT bool_and( + planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) IS NOT NULL + AND planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) > -30 + AND planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) < 30 +) AS all_magnitudes_finite +FROM (VALUES (1),(2),(4),(5),(6),(7),(8)) AS t(body_id); + all_magnitudes_finite +----------------------- + t +(1 row) + +-- ============================================================ +-- Planet magnitude: error cases +-- ============================================================ +DO $$ BEGIN PERFORM planet_magnitude(0, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=0(Sun): %', SQLERRM; END $$; +NOTICE: body_id=0(Sun): planet_magnitude: body_id 0 must be 1-8 (Mercury-Neptune) +DO $$ BEGIN PERFORM planet_magnitude(3, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=3(Earth): %', SQLERRM; END $$; +NOTICE: body_id=3(Earth): cannot compute magnitude for Earth from Earth +DO $$ BEGIN PERFORM planet_magnitude(9, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=9: %', SQLERRM; END $$; +NOTICE: body_id=9: planet_magnitude: body_id 9 must be 1-8 (Mercury-Neptune) diff --git a/test/sql/v016_features.sql b/test/sql/v016_features.sql new file mode 100644 index 0000000..4b40e03 --- /dev/null +++ b/test/sql/v016_features.sql @@ -0,0 +1,161 @@ +-- v016_features.sql -- Tests for v0.16.0: twilight, lunar phase, planet magnitude +-- +-- Verifies twilight dawn/dusk, lunar phase calculations, +-- and planet apparent magnitude. +CREATE EXTENSION IF NOT EXISTS pg_orrery; + +-- ============================================================ +-- Twilight: ordering (astronomical < nautical < civil < sunrise) +-- Eagle, Idaho on the 2024 summer solstice +-- ============================================================ + +-- Dawn ordering: astronomical dawn < nautical dawn < civil dawn < sunrise +-- Use midnight MDT (07:00 UTC) so all "next" events land on the same morning +SELECT sun_astronomical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_nautical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS astro_before_nautical; + +SELECT sun_nautical_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS nautical_before_civil; + +SELECT sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + < sun_next_rise('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + AS civil_before_sunrise; + +-- Dusk ordering: sunset < civil dusk < nautical dusk < astronomical dusk +-- Noon MDT (18:00 UTC) ensures all dusk events are still ahead +SELECT sun_next_set('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_civil_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS sunset_before_civil; + +SELECT sun_civil_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_nautical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS civil_before_nautical; + +SELECT sun_nautical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + < sun_astronomical_dusk('(43.7,-116.4,800)'::observer, '2024-06-21 18:00:00+00'::timestamptz) + AS nautical_before_astro; + +-- ============================================================ +-- Twilight: civil dawn ~30 min before sunrise at mid-latitude +-- ============================================================ + +SELECT extract(epoch FROM + sun_next_rise('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) + - sun_civil_dawn('(43.7,-116.4,800)'::observer, '2024-06-21 07:00:00+00'::timestamptz) +) BETWEEN 1200 AND 3600 + AS civil_dawn_reasonable_offset; + +-- ============================================================ +-- Twilight: high latitude summer -- no astronomical darkness +-- At 60N in June, astronomical dusk should be NULL (never gets dark enough) +-- ============================================================ + +SELECT sun_astronomical_dusk('(60.0,25.0,0)'::observer, '2024-06-21 00:00:00+00'::timestamptz) IS NULL + AS no_astro_dark_60n_summer; + +-- ============================================================ +-- Lunar phase: known full moon (2024-01-25 ~17:54 UTC) +-- Phase angle should be near 180 deg, illumination near 1.0 +-- ============================================================ + +SELECT round(moon_phase_angle('2024-01-25 18:00:00+00'::timestamptz)::numeric, 0) + BETWEEN 170 AND 190 + AS full_moon_angle_near_180; + +SELECT round(moon_illumination('2024-01-25 18:00:00+00'::timestamptz)::numeric, 2) + >= 0.95 + AS full_moon_high_illumination; + +SELECT moon_phase_name('2024-01-25 18:00:00+00'::timestamptz) = 'full_moon' + AS full_moon_named; + +-- ============================================================ +-- Lunar phase: known new moon (2024-01-11 ~11:57 UTC) +-- Phase angle should be near 0 or 360, illumination near 0 +-- ============================================================ + +SELECT moon_illumination('2024-01-11 12:00:00+00'::timestamptz) + < 0.05 + AS new_moon_low_illumination; + +SELECT moon_phase_name('2024-01-11 12:00:00+00'::timestamptz) = 'new_moon' + AS new_moon_named; + +-- ============================================================ +-- Lunar phase: first quarter (2024-01-18 ~03:53 UTC) +-- Phase angle near 90, illumination near 0.5 +-- ============================================================ + +SELECT round(moon_phase_angle('2024-01-18 04:00:00+00'::timestamptz)::numeric, 0) + BETWEEN 80 AND 100 + AS first_quarter_angle_near_90; + +SELECT moon_illumination('2024-01-18 04:00:00+00'::timestamptz) + BETWEEN 0.4 AND 0.6 + AS first_quarter_half_illuminated; + +SELECT moon_phase_name('2024-01-18 04:00:00+00'::timestamptz) = 'first_quarter' + AS first_quarter_named; + +-- ============================================================ +-- Moon age: new moon has age near 0, full moon near 14.7 +-- ============================================================ + +SELECT moon_age('2024-01-11 12:00:00+00'::timestamptz) < 2.0 + AS new_moon_young; + +SELECT moon_age('2024-01-25 18:00:00+00'::timestamptz) + BETWEEN 12.0 AND 17.0 + AS full_moon_age_midcycle; + +-- ============================================================ +-- Illumination range: always [0, 1] +-- ============================================================ + +SELECT moon_illumination('2024-06-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AND moon_illumination('2024-09-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AND moon_illumination('2024-12-01 00:00:00+00'::timestamptz) BETWEEN 0.0 AND 1.0 + AS illumination_always_valid; + +-- ============================================================ +-- Planet magnitude: Jupiter should be bright (negative mag) +-- ============================================================ + +SELECT planet_magnitude(5, '2024-01-15 00:00:00+00'::timestamptz) < 0.0 + AS jupiter_is_bright; + +-- ============================================================ +-- Planet magnitude: Venus is the brightest planet +-- ============================================================ + +SELECT planet_magnitude(2, '2024-06-01 12:00:00+00'::timestamptz) + < planet_magnitude(4, '2024-06-01 12:00:00+00'::timestamptz) + AS venus_brighter_than_mars; + +-- ============================================================ +-- Planet magnitude: Neptune is faint (~+7-8) +-- ============================================================ + +SELECT planet_magnitude(8, '2024-01-15 00:00:00+00'::timestamptz) > 7.0 + AS neptune_is_faint; + +-- ============================================================ +-- Planet magnitude: all planets return finite values +-- ============================================================ + +SELECT bool_and( + planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) IS NOT NULL + AND planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) > -30 + AND planet_magnitude(body_id, '2024-01-15 00:00:00+00'::timestamptz) < 30 +) AS all_magnitudes_finite +FROM (VALUES (1),(2),(4),(5),(6),(7),(8)) AS t(body_id); + +-- ============================================================ +-- Planet magnitude: error cases +-- ============================================================ + +DO $$ BEGIN PERFORM planet_magnitude(0, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=0(Sun): %', SQLERRM; END $$; +DO $$ BEGIN PERFORM planet_magnitude(3, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=3(Earth): %', SQLERRM; END $$; +DO $$ BEGIN PERFORM planet_magnitude(9, '2024-01-15 00:00:00+00'::timestamptz); EXCEPTION WHEN OTHERS THEN RAISE NOTICE 'body_id=9: %', SQLERRM; END $$;