Difference between revisions of "Apoapsis"
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For an object [[Orbit|orbiting]] a [[w:Celestial|celestial]] body, the '''apoapsis''' is the point in its orbit which is ''farthest'' from that body. The opposite position in the orbit is the [[periapsis]]. | For an object [[Orbit|orbiting]] a [[w:Celestial|celestial]] body, the '''apoapsis''' is the point in its orbit which is ''farthest'' from that body. The opposite position in the orbit is the [[periapsis]]. | ||
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[[Category:Celestial mechanics]] | [[Category:Celestial mechanics]] | ||
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Latest revision as of 12:14, 9 April 2024
For an object orbiting a celestial body, the apoapsis is the point in its orbit which is farthest from that body. The opposite position in the orbit is the periapsis.
Periapsis and apoapsis are generic terms. The prefixes "peri-" and "apo-" are commonly applied to the Greek or Roman name of the particular body being orbited.
As an example, consider perigee and apogee for Earth, perijove and apojove for Jupiter, periselene and aposelene or perilune and apolune for lunar orbit, perichron and apochron for Saturn, perihelion and apohelion for the Sun, etc.