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0.3.6 (unreleased)

New Features

  • Add an option to allow querying the rotation matrices that would convert any vector from the (moving) satellite frame to the ECI-aligned frame to the propagate_many function. It is noted that the origin of this ECI-aligned frame is still at the satellite center (See function description.)

0.3.5 (2022-11-19)

This is a pure maintenance release. No features have been added.

0.3.4 (2022-09-07)

New Features

  • Add an option to choose the satellite coordinate frame in the propagate_many function. The two available choices differ in the order of the Cartesian axes (how x/y/z are mapped to motion and nadir directions) and the choice of angles. (See function description.)

0.3.3 (2020-05-13)

Bugfixes

  • PyDateTime was using wrong time zone if current time was requested (e.g., by calling it with empty init arguments, or setting the datetime property to None). The wrong behavior had its origin in a call to datetime.now() while the correct call must be datetime.utcnow (as PyDateTime is defined in the UTC frame. [#13]

0.3.2 (2020-03-26)

New Features

  • Add observer coordinates (in eci frame and moving satellite frame) to propagate_many function. This can be useful if one wants to calculate satellite communication antenna gains w.r.t. observer on Earth. [#12]

Bugfixes

  • In the tle_linestrings_from_orbital_parameters two parameters were missing (eccentricity and argument of perigee), which are necessary for a complete orbit description. [#11]

0.3.1 (2020-01-07)

New Features

  • Migrate to the latest libsgp4 version (master, hash: f5cb54b3), which can be downloaded from Dan Warners repository: https://github.com/dnwrnr/sgp4. Thanks to Cees Bassa for pointing out that the ancient version that was previously in use was having accuracy issues.

0.3.0 (2019-11-28)

Add a benchmark section to the User Manual.

Bugfixes

  • The pytest benchmarks were not working properly (so we had them skipped), because it was not clear how to check if the pytest-benchmark plugin was installed in the first place. This is now clear: can add a config routine to conftest.py.

0.2.20 (2019-11-27)

Finish the User Manual.

0.2.19 (2019-11-27)

New Features

  • Add two example tutorial notebooks.
  • Introduce several helper/utitlity functions, e.g. to create your own TLEs from orbital parameters.

Bugfixes

  • Include tests in (installed) package, such that test runner can find them.
  • Fix github pages rendering, where css/js wasn't found in static directories with a leading underscore (an empty .nojekyll is necessary!)

0.2.18 (2019-11-24)

Bugfixes

  • Really show README on PyPI.

0.2.17 (2019-11-24)

Bugfixes

  • Show README on PyPI.
  • Twine upload didn't work for Python3.5.

0.2.16 (2019-11-24)

Add wheels for MacOS and Windows.

0.2.0 (2019-11-21)

Initial release