All tags
Catalogue tag

#ephemeris

Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.

19 records
Tagged “ephemeris”Ranked by health index
crates.io · PyPI
90Excellenthealth index
nyx-space/anise
A thread-safe alternative to NASA SPICE toolkit, computing spacecraft, planetary, coordinate frame, instrument transformations, ground station visibility, and orbital elements. Engineered for high-throughput Python concurrent execution and flight software, with proven lunar flight heritage.
Rust · Python★ 282↓ 33.3K/moOct 20, 2026
MPL-2.0Oct 20, 2026 · metrics 2.10.0
npm
88Excellenthealth index
SylarLong/iztro
⭐This is a lightweight kit for generating astrolabes for Zi Wei Dou Shu (The Purple Star Astrology), an ancient Chinese astrology. It allows you to obtain your horoscope and personality analysis. 支持多语言轻量级获取紫微斗数排盘信息的javascript开源库。
TypeScript★ 4,213↓ 121.4K/moOct 11, 2026
MITOct 11, 2026 · metrics 2.10.0
PyPI
88Excellenthealth index
ashuttl/linecast
Weather, tides, the sun, the moon, maps, and a planetarium, in your terminal. The Old Farmer's Almanac meets Minitel.
Python★ 540↓ 4,259/moSep 26, 2026
MITSep 26, 2026 · metrics 2.10.0
PyPI
83Excellenthealth index
g-battaglia/kerykeion
Data-Driven Astrology 💫 Kerykeion is a Python library for astrology. It generates SVG charts and extracts detailed structured data for birth charts, synastry, transits, composite charts, and more.
Python★ 724↓ 103.1K/moOct 21, 2026
AGPL-3.0Oct 21, 2026 · metrics 2.10.0
PyPI
80Excellenthealth index
TheDaniel166/moira
Astronomy-first pure-Python ephemeris and astrology computation engine with transparent, auditable calculations.
Python★ 33↓ 9,470/moSep 5, 2026
MITSep 5, 2026 · metrics 2.10.0
Go
80Excellenthealth index
philoserf/dusk
Zero-dependency Go package for astronomical calculations: sunrise/sunset, moonrise/moonset, twilight, and lunar phase, based on Meeus.
Go★ 0Oct 12, 2026
GPL-3.0Oct 12, 2026 · metrics 2.10.0
crates.io · PyPI
77Goodhealth index
ssmichael1/satkit
Satellite and Orbital Dynamics Toolkit
Rust · Python★ 86↓ 12.4K/moAug 28, 2026
Apache-2.0Aug 28, 2026 · metrics 2.10.0
npm
75Goodhealth index
observerly/astrometry
observerly’s lightweight, zero-dependency, fully-tree shakeable type-safe astrometry library for TypeScript. Accurately determine the positions of the Sun, Moon, and planets, handle coordinate transformations with ease, calculate transit times for any celestial object and integrate precision astronomy into your projects.
TypeScript★ 29↓ 1,793/moSep 16, 2026
MITSep 16, 2026 · metrics 2.10.0
npm
71Goodhealth index
hemantgoswami/ephemeris
Javascript implementation of Moshier's ephemeris calculations for sun, planets, comets, asteroids and stars.
JavaScript★ 55↓ 5,078/moSep 29, 2026
GPL-3.0Sep 29, 2026 · metrics 2.10.0
crates.io
71Goodhealth index
nightwatch-astro/skymath
Planning-grade astronomy math for astrophotography tooling
Rust★ 0↓ 4,157/moSep 13, 2026
MPL-2.0Sep 13, 2026 · metrics 2.10.0
Go
67Goodhealth index
TuSKan/astrogo
Pure Go Astropy-inspired astronomy and observatory-planning toolkit
Go★ 1Sep 9, 2026
MITSep 9, 2026 · metrics 2.10.0
PyPI · npm
65Goodhealth index
heavyblotto/caelus
Clean-room TypeScript astrology computation: ephemeris, charts, events, timing techniques, Vedic methods, MCP tools; validated against named references.
TypeScript · Python · JavaScript★ 0↓ 230/moSep 18, 2026
MITSep 18, 2026 · metrics 2.10.0
PyPI
63Moderatehealth index
g-battaglia/libephemeris
High-precision Python ephemeris — NASA JPL DE440/DE441 via Skyfield, Swiss-Ephemeris independent, compatible API.
Python★ 18↓ 7,151/moOct 20, 2026
AGPL-3.0Oct 20, 2026 · metrics 2.10.0
npm
59Moderatehealth index
timotejroiko/sweph
The definitive Swiss Ephemeris bindings for Node.js
C★ 196↓ 53K/moSep 24, 2026
Custom licenseSep 24, 2026 · metrics 2.10.0
PyPI
57Moderatehealth index
RedSC1/py-ephemeris
Python astronomy with bundled DE442-derived data (~0.001 arcsec typical OPM2 reconstruction difference from source). Powered by Taiyin C++: planets, stars, eclipses, events, Chinese calendars and astrology; optional BaZi and Ziwei Doushu packages.
Python · C++★ 1↓ 9,575/moOct 19, 2026
MPL-2.0Oct 19, 2026 · metrics 2.10.0
npm
56Moderatehealth index
prolaxu/swisseph-wasm
A high-precision JavaScript wrapper for the Swiss Ephemeris WebAssembly module, providing professional-grade astronomical calculations for astrology, astronomy, and related applications.
JavaScript · C★ 37↓ 8,938/moSep 14, 2026
Custom licenseSep 14, 2026 · metrics 2.10.0
Go
53Moderatehealth index
Starainrt/astro
Astro: Go Astronomy Algorithms Library - Chinese Lunar Calendar, Solar/Lunar Eclipses, Sun/Moon/Planet Positions, Rise/Set, Planet Events, Stars, Coordinates, Orbits, Sundials and Lightweight Ephemerides (天文算法 Go 库：农历、日月食、日月行星位置、升落、行星天象、恒星、坐标、轨道、日晷与轻量星历)
Go★ 158Sep 18, 2026
Apache-2.0Sep 18, 2026 · metrics 2.10.0
PyPI
50Moderatehealth index
NoahChristian/openephem
Permissive, Swiss-Ephemeris-validated ephemeris & chart engine (tropical & sidereal). MIT, no AGPL.
Python★ 0↓ 2,464/moOct 4, 2026
Custom licenseOct 4, 2026 · metrics 2.10.0
npm
39Weakhealth index
swisseph-js/swisseph
A modern, type-safe TypeScript wrapper for the Swiss Ephemeris library - high precision astronomical calculations for astrology and astronomy applications.
C★ 7↓ 20.4K/moSep 14, 2026
AGPL-3.0Sep 14, 2026 · metrics 2.10.0