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See also: périgée
perigee (plural perigees)
- (astronomy) The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.
- 2014 September 7, Natalie Angier, “The Moon comes around again [print version: Revisiting a moon that still has secrets to reveal: Supermoon revives interest in its violent origins and hidden face, International New York Times, 10 September 2014, p. 8]”, in The New York Times:
- As the moon wheels around Earth every 28 days and shows us a progressively greater and then stingier slice of its sun-lightened face, the distance between the moon and Earth changes, too. At the nearest point along its egg-shaped orbit, its perigee, the moon may be 26,000 miles closer to us than it is at its far point.
- (astronomy, more generally) The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite.
- 2002, Serge Brunier, Solar System Voyage, Cambridge University Press, →ISBN, 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).
- (possibly archaic outside astrology) The point, in any trajectory of an object in space, where it is closest to the Earth.
- see periapsis
closest point in an orbit about the Earth
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