The point at which a spacecraft in lunar orbit is furthest from the moon. The opposite of perilune.
- This paper investigates the least maneuver velocity through the tolerable apolune and other lunar orbit elements.
- The spacecraft consists of an orbiter which goes around the Moon at about 100 km altitude near a polar orbit, and a relay satellite on an elliptical orbit with initial apolune at 2,400 km.
- However, to be useful, the apolune must be located at one of the orbital nodes.
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