astronomia 1.0.0

Astronomical algorithms in Dart — positions of Sun, Moon, and planets, eclipses, phases, coordinates, magnitudes, and more. Based on Jean Meeus's "Astronomical Algorithms".

1.0.0

First stable release. Full audit against Meeus worked examples and the Go/JS reference implementations.

Algorithm fixes:

• eqtime.e() — use VSOP87 true position + aberration (was position2000 without aberration).
• solardisk.ephemeris() — use trueVSOP87 + aberration per Meeus Ch. 29.
• saturnring.ring() — FK5 corrections, aberration, nutation on ring pole, corrected B′.
• apsis perigee parallax — complete Table 50.A coefficient series (16 missing terms).
• sidereal.apparent() — new function; fix nutation epoch in apparent0UT.
• moonphase — book-accurate A1/A7 constants and quarter-phase E factor (from 0.3.3).

Tests: 219 tests, Meeus worked examples tightened to book precision across moon, solar, nutation, sidereal, eqtime, solardisk, apsis, kepler, precess, pluto, julian, globe, and related modules.

0.3.3

• Fix moon phase corrections to match Meeus Ch. 49 exactly: A1 = 299.77°, A7 = 207.14°, and the missing E factor on the quarter-phase −0.00034 sin(2M′−M) term.
• Fix Sun mean anomaly T² coefficient in moon physical ephemeris (−0.0001535, was −0.0001536).
• Tighten moon module tests to book-precision Meeus worked examples (47.a–53.a); 220 tests passing.

0.3.2

• Rename VSOP87 data files to lower_case_with_underscores (fixes 8 file_names lint issues).
• Remove unused imports and variables across test files.
• Fix unnecessary brace in string interpolation in sexagesimal.dart.
• Zero dart analyze issues.

0.3.1

• Add lib/<module>.dart public re-export files for all modules (fixes implementation_imports lint).
• Add missing lib/base.dart re-export, remove empty node directory.

0.3.0

• All 56 modules complete — no more stubs.
• Mars physical ephemeris — planetocentric declinations, areographic meridian, position angles, illuminated fraction (Ch. 42).
• Moon physical libration — optical + physical librations, selenographic Sun coordinates, sunrise/sunset on lunar surface, 52-feature catalog (Ch. 53).
• Saturn moons — positions of all 8 major moons (Mimas through Iapetus) in Saturn radii (Ch. 46).
• Planetary conjunctions — Len5 interpolation for planetary and stellar conjunctions (Ch. 18).
• Solar VSOP87 — added trueVSOP87() and apparentVSOP87() high-accuracy functions.
• Public re-export files — every module now has a lib/<module>.dart re-export. Import as package:astronomia/solar.dart instead of reaching into src/. No more implementation_imports lint.
• 216 tests passing.

0.2.0

• VSOP87 planetary positions — full heliocentric coordinates for all 8 planets via planetposition module.
• Rise/transit/set — Meeus ch. 15 refined algorithm with 3-day interpolation. Includes moonTimes() with lunar parallax correction.
• Geocentric planet positions — elliptic.position() with light-time correction, aberration, FK5, nutation.
• Equation of time — high-accuracy e() and simplified eSmart().
• Solar disk ephemeris — P, B0, L0 for physical observations of the Sun.
• Saturn ring geometry — B, B', ΔU, P, and ring axes.
• Ecliptic aberration — apparent.eclipticAberration() for ecliptic coordinates.
• Apparent sidereal time — sidereal.apparent0UT() with nutation correction.
• Cleaned up barrel file — non-conflicting foundational exports only, specialized modules imported directly.
• Fixed all lint warnings. 202 tests passing.

0.1.0

• Initial release with 45 fully ported modules from Meeus's "Astronomical Algorithms".
• Sun: position, solstices, sunrise/sunset, equation of time.
• Moon: position, phases, illumination, nodes, apsis, max declination.
• Planets: Kepler solvers, orbital elements, conjunctions, oppositions, Pluto.
• Coordinates: ecliptic/equatorial/horizontal/galactic, precession, nutation, parallax, refraction.
• Misc: eclipses, Easter, magnitudes, binary stars, geodesy, angular separation, sundials.
• 12 modules stubbed pending VSOP87 planetary theory data.