perigee
Pronunciation Noun
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Pronunciation Noun
perigee (plural perigees)
- (astronomy) The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.
- (astronomy, more generally) The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite.
- 1995, John H. Rogers, The Giant Planet Jupiter, Cambridge University Press, ISBN 978-0-521-41008-3, page 335 ↗:
- 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.
- 2002, Serge Brunier, Solar System Voyage, Cambridge University Press, ISBN 978-0-521-80724-1, page 36 ↗:
- The resolution of the images obtained by this American probe [Messenger] will depend on its altitude [above Mercury] at any one time: about ten meters at perigee (200km altitude), but only one 1 km at apogee (15000km).
- 2010, Ruth Walker and Mary M. Shaffrey et al., Exploring Space: The High Frontier, Jones & Bartlett Learning, ISBN 978-0-7637-8961-9, page 129 ↗:
- [Nereid’s] apogee—farthest point from Neptune—is five times the distance of its perigee—its closest point.
- 1995, John H. Rogers, The Giant Planet Jupiter, Cambridge University Press, ISBN 978-0-521-41008-3, page 335 ↗:
- (possibly, archaic, outside, astrology) The point, in any trajectory of an object in space, where it is closest to the Earth.
- see periapsis
- French: périgée
- Russian: периге́й
- Spanish: perigeo
- French: périgée
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004