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[Orekit Users] Orekit 9.0 released

The Orekit team is pleased to announce that version 9.0 of Orekit has been released today.

Version 9.0 is a major release of Orekit. It introduces several new features and bug fixes.
New features introduced in version 9.0 are:

- Taylor algebra propagation (for high order uncertainties propagation or very fast Monte-Carlo studies)
 - multi-satellites orbit determination
 - parallel multi-satellites propagation
 - parametric accelerations (polynomial and harmonic)
 - turn-around measurements
 - inter-satellite range measurements
 - rigth ascension/declination measurements
 - Antenna Phase Center measurements modifiers
 - EOP estimation in precise orbit determination
 - orbit to attitude coupling in partial derivatives
 - parsing of CCSDM Tracking Data Messages
- parsing of university of Bern Astronomical Institute files for Klobuchar coefficients
 - ITRF 2014
 - preservation of non-Keplerian orbits derivatives
 - JB2008 atmosphere model
 - NRL MSISE 2000 atmosphere model
 - boolean combination of events detectors
 - ephemeris writer
- speed improvements when tens of thousands of measurements are used in orbit determination
 - Danish translations

Several bugs have been fixed.

This version depends on Hipparchus 1.1 released in March 2017.

best regards,

Luc Maisonobe, on behalf of the Orekit team