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Alpha Centauri

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Alpha Centauri
system of three stars that comprises the brightest part of the constellation Centaurus

Wikipedia English The Free Encyclopedia

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Alpha Centauri
Alpha Centauri (a Cen), also known as Rigil Kent (the "Centaur's Foot") or Toliman, is the closest star system to the Solar System at . It consists of three stars: the pair Alpha Centauri A and Alpha Centauri B and a small and faint red dwarf, Alpha Centauri C, better known as Proxima Centauri, that may be gravitationally bound to the other two. (Beta Centauri, or ß Centauri, should not be confused with Alpha Centauri B, and is a separate, trinary, system of its own.) To the unaided eye, the two main components appear as a single object of an apparent visual magnitude of -0.27, forming the brightest star in the southern constellation Centaurus and the third-brightest star in the night sky, only outshone by Sirius and Canopus.

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WordNet 2.0 Dictionary

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Alpha Centauri

Noun
1. brightest star in Centaurus; second nearest star to the sun
(synonym) Rigil Kent, Rigil
(hypernym) binary star, binary, double star
(member-holonym) Centaurus, Centaur, The Centaur


ASTRONOMY UNBOUND Dictionary

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Alpha Centauri
A triple star system which has the distinction of being the closest star system to the Sun. It exists at a distance of 4.3 light years. The two other components are Beta Centauri and Proxima Centauri, which is slightly closer than the other two. Alpha Centauri can be seen in the southern sky in the constellation of Crux as a bright star of apparent magnitude -0.1. In reality, it is a star very similar to the Sun, since both have spectral classifications of G2 and both are on the main sequence.

Dizionario inglese-italiano 1.0.012

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ALPHA CENTAURI
ALFA CENTAURI


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