|Alpha Centauri (Rigil Kentaurus)|
Grid E4, Beta Quadrant
United Earth (United Federation of Planets)
Alpha Centauri is a trinary star system consisting of the stars Alpha Centauri A, Alpha Centauri B, and Proxima Centauri. It is also the closest stellar system to Sol at a distance of 4.33 lightyears.
Alpha Centauri A and Alpha Centauri B have seven planets in their gravitational pull, including the Class-M planet Centauri VII where the University of Alpha Centauri is located. Farther in orbit, acting more as a planet than a star, is Alpha Centauri C or Proxima Centauri, which has two planets itself. The second of these, Alpha Proxima II, is home to Proxima Colony and Proxima Maintenance Yards.
First contact was established with Alpha Centauri by at least 2119, when Zefram Cochrane left the planet to an unknown destination and was never found again, presumed dead.
- Alpha Centauri at Memory Alpha