There’s a python package also, JPLephem — https://pypi.org/project/jplephem/ https://pypi.org/project/jplephem/ By default, it does solar system bodies … plane

There’s a python package also, JPLephem — https://pypi.org/project/jplephem/ https://pypi.org/project/jplephem/ By default, it does solar system bodies … planets and our moon … but you can direct it to other SPK files (time-based ephemeris summaries) for asteroids, other moons, and spacecraft.