# cosinekitty/astronomy

Astronomy Engine: multi-language calculation of Sun, Moon, and planet positions. Predicts lunar phases, eclipses, transits, oppositions, conjunctions, equinoxes, solstices, rise/set times, and other events. Provides vector and angular coordinate transforms among equatorial, ecliptic, horizontal, and galactic orientations.

Repository: https://github.com/cosinekitty/astronomy
Canonical: https://ross.abutalabs.com/products/astronomy
Language: C
License: MIT
License Family: permissive
Last push: 2025-01-27T19:41:55+00:00

## Health v2 (maintenance only)
Score: 24/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 3, release rhythm 8, longevity 100
- inputs: {"age_days": 2705, "days_push": 583, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 998, forks 128 (observed 2026-09-03T02:15:10.250054+00:00)

## Summary
No AI-extracted summary yet.

## Member repositories
- cosinekitty/astronomy (main) score 24

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:10.250054+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Data as of 2026-08-30T08:39:29.467469+00:00.