Coordinate System for State Vectors? ECI?
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OrbitalPineapple commented
The position and velocity state vectors seem to be in some Earth/body centric inertial coordinate system. For Earth, would it be a Earth Centric Inertial (ECI) coordinate system or Geocentric Celestial Reference System (GCRS)? What is the x-axis point to?
RazerM commented
We use J2000.