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Term: GEI2000

Spacecraft orbits and locations are often made available in geocentric equatorial inertial coordinates for a fixed epoch, e.g. the standard astronomical epoch known as J2000.0, which is 12:00 UT on 1 January 2000. We treat this as a separate coordinate system (with the qualified acronym GEI2000) and specify how to transform from this to other systems.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan