Orekit 11.3 released

The Orekit team is pleased to announce the release of Orekit version 11.3.

This is a minor version, including both new features and bug fixes.

Highlights in the 11.3 are:

  • The unscented Kalman filter (numerical version),
  • The semi-analytical unscented Kalman filter (DSST version),
  • A new PVCoordinatesProvider modelling waypoints on an ellipsoid following a loxodrome (commonly, a rhumb bline),
  • A new method to compute hyperbolic anomaly based on Gooding and Odell algorithm,
  • A new built-in additional state for covariance propagation (linear method based on the state transition matrix computation),
  • With a new state covariance object allowing covariance transformation between frames and orbit types,
  • And the ability to extrapolate a state covariance matrix using a Keplerian model,
  • A new ExtremumApproachDetector for close encounter computation,
  • The migration of all JUnit tests from JUnit 4 to JUnit 5,
  • The ability to estimate measurement parameters (station position or clock biases) from an ephemeris,
  • New methods to convert from/to Orekit frames and CCSDS frames,
  • Improvements of CCSDS CDM (Collision Data Message) parsers,
  • Improvements in date handling and aggregate bounded propagators,
  • Several bug fixes and documentation improvements.

This release also include a new tutorial for maneuvers’ thrusts and dates estimation.

This version depends on Hipparchus 2.3.

For complete release notes please see:

The maven artifacts are available in maven central.
The source and binaries can be retrieved from the forge releases page:

How to cite this version ? Use the Zenodo Digital Object Identifier(DOI).


Kudos to the team for this awesome release (my own contribution being very modest).
Glad to see that Zenodo worked.

And now for my usual question to @petrus.hyvonen (many thanks again for managing the wrapper btw) with a bonus one this time:

  • When can we expect the conda forge to be updated?
  • Any idea of when we’ll be able to install it with the brand new Python 3.11?

Edit: Petrus announced the new wrapper release here.


Warning, for those still using the now deprecated meanToEllipticEccentric method from KeplerianOrbit, it is wrapped to the wrong conversion from the new KeplerianAnomalyUtility.
I opened an issue and this will be fixed in the next patch release.


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And the tutorials version 11.3 are released too !

Orekit tutorials v11.3 introduces a new tutorial for estimating orbital maneuvers properties (thrusts norms and dates) in a batch least-squares orbit determination scheme (thank you @gc !!).

The sources can be downloaded from the orekit-tutorials forge release page or directly from Orekit website download page.