Missing some orbital paramenters in get Orbit: Keplerian

Orekit Python Wrapper usage
2

Hello @AlessandroV,

Cause

These methods were already not available in the Orbit class as you can see when comparing these documentations:
https://www.orekit.org/site-orekit-11.3.3/apidocs/org/orekit/orbits/Orbit.html
https://www.orekit.org/site-orekit-12.1.2/apidocs/org/orekit/orbits/Orbit.html

However, this is indeed due to a change in the output type of the IOD method you are using. It initially returned a KeplerianOrbit but in the 12.0 version, it returns an Orbit.

Solution

You can simply convert your orbit to a Keplerian one using :

converted_orbit = KeplerianOrbit.cast_(OrbitType.KEPLERIAN.convertType(keplerianOrbit_iod))

Cheers,
Vincent