LekhoriLekhoriThe point, in an orbit about the Earth, that is farthest from the Earth: the apoapsis of an Earth orbiter.
The point, in an orbit about any planet, that is farthest from the planet: the apoapsis of any satellite.
Conjunctions of I and II [Io and Europa] occur when they are near perigee and apogee respectively; conjunctions of II and III [Europa and Ganymede] occur when II [Europa] is near perigee.
The point, in any trajectory of an object in space, where it is farthest from the Earth.
From Middle French apogée, from Latin apogaeum, apogēum, from Ancient Greek ἀπόγειον (apógeion, “away from Earth”), from ἀπό (apó, “away”) + γῆ (gê, “Earth”).
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