Reference Frames (`spacekernel.frames`)#

Base class#

Abstract base class for reference frames and coordinate systems.

`GCRF`	Geocentric Celestial Reference Frame (GCRF).
`ITRF`	International Terrestrial Reference Frame (ITRF).
`TEME`	True Equator Mean Equinox Frame (TEME).

ENU(double lon, double lat, double alt, ...)

East-North-Up (ENU) Local Tangent Reference Frame.