Ceti Alpha system

The Ceti Alpha system was a star system located a considerable distance from the Delphic Expanse and the planet Denobula as well as three days away from Regula I at an unspecified warp speed. Its primary, Ceti Alpha, was orbited by at least six planets until 2268. Ceti Alpha V was formerly M-class until it was devastated by the destruction wrought by Ceti Alpha VI when it exploded. The nearest starbase was Starbase 12. 

Ceti Alpha V was a "habitable, although a bit savage, somewhat inhospitable" planet chosen by Captain Kirk to resettle Khan Noonien Singh and the crew of the SS Botany Bay after their attempted takeover of the USS Enterprise (NCC-1701) in 2267. Six months later, Ceti Alpha VI exploded, shifting Ceti Alpha V's orbit and rendering the latter planet incapable of supporting complex life. This was discovered when the USS Reliant visited the system in 2285. 

''In an alternate timeline, Ceti Alpha V was the refuge for the last 6,000 members of the Human species in the 2150s and 2160s, survivors of the devastating Xindi attacks on Earth and its colonies, as it was far from the Delphic Expanse. The guided a convoy of refuges there.''

Ceti-Alpha-System Sistema Ceti Alpha セティ・アルファ星系 Ceti Alpha systeem