OREKIT is a low level space dynamics library. It provides basic elements (orbits, dates, attitude, frames ...) and various algorithms to handle them (conversions, analytical and numerical propagation, pointing ...).

Jar containing the Orekit-Data that is needed as a resource for most of the Orekit applications using it

A simple software simulator of OPS-SAT

This repository contains a general Java implementation of the GDL90 protocol basing on an Android App made by Frank van der Hulst drifter.frank@gmail.com.

Rugged is an Orekit add-on handling Digital Elevation Models contribution to line of sight computation