astronomy-engine

A Home Assistant dashboard card showing what's in the sky tonight: sun, moon, and planet visibility, plus upcoming eclipses, celestial events, and meteor showers for your location. Powered by Astronomy Engine.

Archived AstronomyKit development history and historical issues/PRs. Active package: https://github.com/heirloomlogic/AstronomyKit

Offline observational astronomy — planet and moon positions, rise/set, phases, eclipses, and seasons for any place and time via MCP. STDIO or Streamable HTTP.

A desktop stargazing app for Windows, macOS and Linux. Shows the real sky above your location at any date, built on published star catalogues, and works offline.

École initiatique numérique : apprendre à lire le ciel comme un langage symbolique. Parcours en 15 niveaux, calcul de thème natal, mythologie, Jung, Tarot, alchimie, hermétisme. React + TS + Vite.

Epistemic discipline for AI assistants — truth statuses, an error registry, mutation-tested guards. Plain files, git as memory. Core in Polish; the assistant speaks your language.

The Solar System 3D Visualisation

Monde und Ringe des Jupiter, modelliert/simuliert mit OpenSCAD (Moons and Rings of Jupiter modelled/simulated in OpenSCAD)

Home Assistant integration that shows what's in the sky tonight: planet visibility, darkness, the Moon, eclipses, meteor showers and celestial events, calculated locally with Astronomy Engine.

The Philippine night sky, star by star: stand anywhere in the islands and look around at the real stars, constellations, Moon and planets for any time tonight.

An interactive digital armillary sphere (渾象) — visualizing the celestial sphere, the 28 Chinese lunar mansions, and axial precession across ±3000 years. Built with Three.js and astronomy-engine.

Tsukuyomi, a Japanese ink-painting inspired astronomical karakuri clock for the browser.

🌍 Interactive Azimuthal Equidistant map & celestial ephemeris engine (D3.js, Astronomy Engine, SGP4 ISS tracker, Gleason map distortion analysis & Full HD presentation)

Migration of a legacy .NET astronomy engine to Flutter/Dart for mobile apps. Implements VSOP87 planetary calculations (Mercury, Venus, Mars, Jupiter, Saturn) with a custom engine and UI. Demonstrates .NET to Flutter conversion, scientific computing, and cross-platform mobile development.

A Swift library for calculating positions of the Sun, Moon, planets, and fixed stars

Reproducible exoplanet transit analysis with statistical validation and synthetic-only machine learning experiments.

Tropical natal chart math in JavaScript: UTC conversion, ecliptic longitudes, ascendant, whole-sign and Placidus houses with astronomy-engine