Satellite positions can be expressed in various
WinOrbit uses the following positions:
* Inertial (Celestial) Cartesian system
* Geodetic Cartesian system.
The state vector published by NASA for Shuttle operations is an
Earth-fixed Greenwich, or Geodetic position. The NASA state
vector E, F, and G values (in feet) can be obtained from the WinOrbit
Geodetic position by multiplying by 3280.839895 feet/km.