Alpha Centauri B

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Alternative forms[edit]


From α (brightest) + Centauri ("of the constellation Centaurus")

Proper noun[edit]

Alpha Centauri B

  1. (astronomy) The brightest star in the southern constellation of Centaurus. Alpha Centauri is actually a binary star with Proxima Centauri as a third component. Alpha Centauri B is less bright than Alpha Centauri A and is somewhat less bright than our sun.