Difference between revisions of "Apoapsis"
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| − | For an object [[Orbit|orbiting]] a celestial body, the '''apoapsis''' is the point in its orbit which is ''farthest'' from that body. | + | {{Stub}} |
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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]]. | ||
'''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. | '''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 [[Moon|lunar orbit]], perichron and apochron for [[Saturn]], perihelion and apohelion for the [[Sun]], etc. | As an example, consider perigee and apogee for [[Earth]], perijove and apojove for [[Jupiter]], periselene and aposelene or perilune and apolune for [[Moon|lunar orbit]], perichron and apochron for [[Saturn]], perihelion and apohelion for the [[Sun]], etc. | ||
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| + | The apoapsis is referred to in various MFD modes as: | ||
| + | *'''ApA''', apoapsis altitude, distance of the apoapsis from the surface of the body. | ||
| + | *'''ApD''', apoapsis distance, essentially the same as ApA. | ||
| + | *'''ApR''', apoapsis radius, distance of the apoapsis from the center of the body. | ||
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| + | == See also == | ||
| + | [[w:Apsis|Apsis]] at [[w:Wikipedia|Wikipedia]] | ||
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| + | [[Category: Articles]] | ||
| + | [[Category:Glossary]] | ||
| + | [[Category:Celestial mechanics]] | ||
Latest revision as of 12:49, 20 December 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.
The apoapsis is referred to in various MFD modes as:
- ApA, apoapsis altitude, distance of the apoapsis from the surface of the body.
- ApD, apoapsis distance, essentially the same as ApA.
- ApR, apoapsis radius, distance of the apoapsis from the center of the body.