<commit_before>![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)

## 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
<commit_msg>Added Zenodo badge (DOI) citing Orekit.<commit_after>![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

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