An attempt to reconcile all available versions of the Accrete/Starform/Stargen solar system generator.

A command-line tool for producing tables of the positions of solar system objects over time.

The Swiss Ephemeris available through Swift Package Manager

A command-line tool for producing tables of the positions of solar system objects over time.

A versatile multifluid HD/MHD code that runs on clusters of CPUs or GPUs, with special emphasis on protoplanetary disks.

Graphical version of DeTeCt

Public version of the GIZMO multi-physics massively-parallel code

kepler is a C and Python astronomy library. It implements VSOP87 for the planets, ELP 2000-82B for the Moon, minor body calculations using the MPC database, IAU precession & nutation models, rise/transit/set, Moon phase, eclipse, and equinox/solstice calculations.

A program to create low noise particle representations of planets.

Source code for Equilibrium Tide calculations

Source code to reference orbital elements to the invariable plane.

Calculate Hill stability for 3-body systems

generates on the fly wkt descriptions from planetary bodies info

Ecliptic watchface for Pebble smartwatch displays positions of the Sun, the Moon and five brightest planets

Game based off of the Asteroids classic game! You are an alien that wants to destroy the rest of the universe!