Ryan Malloy
46c8a30575
Twilight: 6 functions (civil/nautical/astronomical × dawn/dusk) reusing the existing find_next_crossing() bisection search with Sun depression angle thresholds (-6°, -12°, -18°). Returns NULL for polar regions where the threshold is never reached. Lunar phase: 4 functions computing Sun-Earth-Moon geometry from VSOP87 + ELP2000-82B. Phase angle [0,360) via elongation + cross product z-component for waxing/waning discrimination. 8 named phases in 45° bins. Moon age approximated from phase angle and mean synodic month. Planet magnitude: Mallama & Hilton (2018) polynomial model with VSOP87 heliocentric distances and phase angle via law of cosines. All 7 planets (Mercury-Neptune, excluding Earth). Saturn ring tilt not modeled. 151 → 162 SQL objects. 26 → 27 test suites, all passing.
5 lines
173 B
Plaintext
5 lines
173 B
Plaintext
comment = 'A database orrery — celestial mechanics types and functions for PostgreSQL'
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default_version = '0.16.0'
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module_pathname = '$libdir/pg_orrery'
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relocatable = true
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