3 Commits

Author	SHA1	Message	Date
Ryan Malloy	a349f5505a	Add v0.13.0: nutation, make_equatorial constructor, rise/set predictions ... Integrate IAU 2000B nutation (~9 arcsec) into the solar system observation pipeline via precess_and_nutate_j2000_to_date(). Affects all planet, star, moon, and small body RA/Dec and az/el values. Satellite SGP4/TEME pipeline unchanged. Add make_equatorial(ra_hours, dec_deg, distance_km) constructor to replace error-prone text literal casts. Add 8 rise/set prediction functions (planet_next_rise/set, sun_next_rise/set, moon_next_rise/set, sun_next_rise/set_refracted) using bisection algorithm adapted from satellite pass prediction. Returns NULL for circumpolar and polar night edge cases. Fix DE fallback test fragility: replace exact float equality with tolerance comparisons to handle GCC LTO inlining divergence across translation units. 132 -> 141 SQL objects. 22 -> 24 regression suites. All 24 passing.	2026-02-25 13:53:22 -07:00
Ryan Malloy	b0741c553b	Add v0.10.0: aberration, DE apparent, angular separation, stellar parallax ... Annual stellar aberration (~20 arcsec) added to all 6 existing _apparent() functions via classical first-order v/c projection (Ron & Vondrak). Earth velocity sourced from VSOP87 xyz[3..5] (analytic) or DE numerical differentiation. New functions (106 -> 114): - eq_angular_distance(): Vincenty formula, stable at 0 and 180 deg - eq_within_cone(): cosine shortcut for fast cone-search predicate - <-> operator on equatorial type - 6 DE apparent variants with VSOP87 fallback: planet/sun/moon_observe_apparent_de(), planet/moon_equatorial_apparent_de(), small_body_observe_apparent_de() Stellar parallax now functional in star_observe_pm() and star_equatorial_pm() — Green (1985) Eq. 11.3 displacement using Earth heliocentric position from VSOP87. All 19 regression suites pass (18 existing + new aberration suite).	2026-02-21 21:47:42 -07:00
Ryan Malloy	b33d63034b	Add v0.9.0 apparent position features: equatorial type, refraction, proper motion, light-time ... New equatorial type (24 bytes: RA/Dec/distance) captures apparent coordinates of date — what the observation pipeline computes at precession step 3 but was discarding before hour angle conversion. Matches telescope GoTo mount conventions. 24 new SQL functions (82 → 106 total): - equatorial type I/O + 3 accessors (eq_ra, eq_dec, eq_distance) - Satellite RA/Dec: eci_to_equatorial (topocentric), eci_to_equatorial_geo (geocentric) - Solar system equatorial: planet/sun/moon/small_body_equatorial - Atmospheric refraction: Bennett (1982) with domain clamp at -1 deg - Refracted pass prediction: predict_passes_refracted (horizon at -0.569 deg) - Stellar proper motion: star_observe_pm, star_equatorial_pm (Hipparcos/Gaia convention) - Light-time correction: planet/sun/small_body_observe_apparent, *_equatorial_apparent - DE equatorial variants: planet_equatorial_de, moon_equatorial_de Also includes v0.8.0 orbital_elements type (MPC parser, small_body_observe), GiST 0-based indexing fix, llms.txt updates, and doc improvements. All 18 regression suites pass. Zero build warnings (GCC + Clang).	2026-02-21 15:31:46 -07:00