https://github.com/cs-si/orekit

OREKIT is a free low level space dynamics library written in Java. Please visit our Gitlab instance for issues and contributions: https://gitlab.orekit.org
https://github.com/cs-si/orekit

astrodynamics attitude java library orbit-determination orbit-propagation orbital-mechanics satellite-orbit satellite-prediction space space-mechanics spaceflight

Last synced: 10 months ago
JSON representation

OREKIT is a free low level space dynamics library written in Java. Please visit our Gitlab instance for issues and contributions: https://gitlab.orekit.org

• Host: GitHub
• URL: https://github.com/cs-si/orekit
• Owner: CS-SI
• License: apache-2.0
• Created: 2014-08-11T19:29:35.000Z (over 11 years ago)
• Default Branch: develop
• Last Pushed: 2024-10-29T23:46:40.000Z (about 1 year ago)
• Last Synced: 2024-10-30T00:46:09.848Z (about 1 year ago)
• Topics: astrodynamics, attitude, java, library, orbit-determination, orbit-propagation, orbital-mechanics, satellite-orbit, satellite-prediction, space, space-mechanics, spaceflight
• Language: Java
• Homepage: http://www.orekit.org/
• Size: 162 MB
• Stars: 188
• Watchers: 21
• Forks: 78
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE.txt

Awesome Lists containing this project

README

          
![Orekit logo](https://www.orekit.org/img/orekit-logo.png)

# Orekit

> An accurate and efficient core layer for space flight dynamics applications

[Orekit](https://www.orekit.org) is a low level space dynamics library written

in Java. Orekit is designed to be easily used in very different contexts, from

quick studies up to critical operations. As a library, Orekit provides basic

elements (orbits, dates, attitude, frames, ...) and various algorithms to

handle them (conversions, propagations, pointing, events detection, orbit determination ...).

[![](http://img.shields.io/:license-apache-blue.svg)](http://www.apache.org/licenses/LICENSE-2.0.html)

[![](https://sonar.orekit.org/api/project_badges/measure?project=orekit%3Aorekit&metric=alert_status)](https://sonar.orekit.org/dashboard?id=orekit%3Aorekit)

[![](https://sonar.orekit.org/api/project_badges/measure?project=orekit%3Aorekit&metric=coverage)](https://sonar.orekit.org/dashboard?id=orekit%3Aorekit)

[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.7249096.svg)](https://doi.org/10.5281/zenodo.7249096)

## Download

### Official releases

[Official Orekit releases](https://gitlab.orekit.org/orekit/orekit/-/releases)

are available on our [Gitlab instance](https://gitlab.orekit.org/). They are

also available in the

[Maven repository](https://mvnrepository.com/artifact/org.orekit/orekit).

### Development version

To get the latest development version, please clone our official repository

and checkout the `develop` branch:

```bash

git clone -b develop https://gitlab.orekit.org/orekit/orekit.git

```

__Note:__ Our official repository is

[mirrored on Github](https://github.com/CS-SI/Orekit).

## Documentation

Project overview, architecture and development, detailed features list,

Javadoc and a lot of other information is available on the

[Maven site](https://www.orekit.org/site-orekit-development/).

## Getting help

The main communication channel is our [forum](https://forum.orekit.org/). You

can report bugs and suggest new features in our

[issues tracking system](https://gitlab.orekit.org/orekit/orekit/issues). When

reporting security issues check the "This issue is confidential" box.

## Contributing

Orekit exists thanks to the contribution of

[many people](https://gitlab.orekit.org/orekit/orekit/graphs/develop).

Please take a look at our

[contributing guidelines](src/site/markdown/contributing.md) if you're

interested in helping!

## Building

Detailed information on how to build Orekit from source either using Maven or

Eclipse is provided in [building.md](src/site/markdown/building.md) file.

## Dependencies

Orekit relies on the following

[FOSS](https://en.wikipedia.org/wiki/Free_and_open-source_software) libraries,

all released under business friendly FOSS licenses.

### Compile-time/run-time dependencies

* [Hipparchus](https://hipparchus.org/), a mathematics library released under

  the Apache License, version 2.0.

### Test-time dependencies

* [JUnit 5](http://www.junit.org/), a widely used unit test framework released

  under the Eclipse Public License, version 1.0.

* [Mockito](https://site.mockito.org/), a mocking framework for unit tests,

  released under MIT license.

More detailed information is available in the

[Maven site](https://www.orekit.org/site-orekit-development/dependencies.html).

## License

Orekit is licensed by [CS GROUP](https://www.c-s.fr/) under

the [Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html).

A copy of this license is provided in the [LICENSE.txt](LICENSE.txt) file.