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Areocentric orbit

Anareocentric orbit is anorbit around the planetMars.

Animation of2001 Mars Odyssey's trajectory aroundMars from October 24, 2001, to October 24, 2002  2001 Mars Odyssey ·  Mars

Theareo- prefix is derived fromAres, theGreek equivalent of the Roman godMars. The name is analogous to the termgeocentric orbit for an orbit around Earth andheliocentric orbit for an orbit around the Sun. As with these other orbits, theapsides of an areocentric orbit are sometimes called by specialized names: thepericenter is namedperiareon (analogous toperigee) and theapocenter is namedapoareon (analogous toapogee).

The firstartificial satellite to orbit another planet — the U.S. probeMariner 9 — entered areocentric orbit on 13 November 1971.[1] Within a month, Mariner 9 was joined in orbit by two Soviet orbiters:Mars 2 (27 November 1971) andMars 3 (2 December 1971).[2]

See also

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References

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  1. ^Edward Clinton Ezell; Linda Neuman Ezell (1984).On Mars: Exploration of the Red Planet, 1958–1978 (NASA SP-4212). The NASA History Series. NASA Scientific and Technical Information Branch. p. 288.
  2. ^V.G. Perminov (July 1999). "4.6 The Spacecraft's Struggle to Mars".The Difficult Road to Mars (NP-1999-06-251-HQ)(PDF). Monographs in Aerospace History. Translated by Katherine A. Nazarova. NASA. p. 57.
 

This article about geology, geography or other features of the planetMars or its moons is astub. You can help Wikipedia byexpanding it.


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