Originally a term used only for objects orbiting Old Earth, but from the Interplanetary Age onward a term used for any object orbiting any planet or moon. Thee point in an object's orbit at which is farthest from the world it is orbiting. Apoapsis is a more general term yet again. The opposite of perigee.
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Development Notes
Text by M. Alan Kazlev
Initially published on 08 October 2001.