Alpha Centauri
- Trinary star system consisting of Alpha Centauri A, Alpha Centauri B, and Proxima Centauri
- Nearest star system to Sol
- Located in Sector 002 within the Beta Quadrant
- Known as Sei'chi in Romulan language (ENT Novel: Kobayashi Maru)
- System colonization history:
- 2088: Alpha Centauri III
- By 2155: Proxima Centauri II
- By 2269: Alpha Centauri VII
Known Planets
- Alpha Centauri A
- Alpha Centauri III (Alpha Centauri A III)
- Alpha Centauri B
- Alpha Centauri VII (Alpha Centauri B II)
- Proxima Centauri