Ephemeris Python Packages

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.

spiceypy

SpiceyPy: a Pythonic Wrapper for the SPICE Toolkit.

anise

ANISE provides a toolkit and files for Attitude, Navigation, Instrument, Spacecraft, and Ephemeris data. It's a modern replacement of the NAIF SPICE toolkit.

calcchinesecalendar

High-precision Chinese lunar calendar tool based on JPL DE ephemeris.

gmat-run

Run GMAT mission scripts from Python and get results as pandas DataFrames.

kosmorrolib

Kosmorrolib, a library to calculate ephemerides.

libephemeris

NASA-powered Python library for high-precision astronomical ephemerides. Features an API compatible with Swiss Ephemeris (pyswisseph) and utilizes Skyfield for professional-grade celestial calculations and orbital data.

moira-astro

Pure Python ephemeris and astrology engine built on JPL DE441 and SPK kernels.

stellium

A modern Python library for astrological chart calculation, visualization, reporting and data analysis. Built on the Swiss Ephemeris for astronomical accuracy.

planetmapper

PlanetMapper: A Python package for visualising, navigating and mapping Solar System observations

astronomia

Library for calculation of ephemeris and other astronomical calculations

azely

Azimuth/elevation calculator for astronomical objects

swisseph-ffi

Pure Python ctypes FFI wrapper for the Swiss Ephemeris C library

eph

Represent, retrieve and manipulate ephemerides with python.

spacetracktool

A Python class for making requests to space-track.org

ephemeris-mcp

Precision astronomical ephemeris for AI agents. An MCP server providing planetary positions via the Swiss Ephemeris.

pyplanets

Library of astronomical algorithms in Python to compute planets ephemeris and phenomena

starward

An educational astronomy calculation toolkit with a soul. Show your work with --verbose mode. Sun/Moon positions, rise/set times, twilight, phases, coordinate transforms, Julian dates, and visibility planning. Pure Python, no compiled dependencies.

starlight-astro

A modern Python library for astrological chart calculation, visualization, reporting and data analysis. Built on the Swiss Ephemeris for astronomical accuracy.

ewia

Library to calculate apparent positions of astronomical objects