Tau Ceti
From Tardis Wiki, the free Doctor Who reference
Tau Ceti was a star roughly 11.9 light years away from Sol. Its star system had at least three inhabited planets: Diplos, Ogros, (TV: The Stones of Blood) and Zygor. (PROSE: The Bodysnatchers)
Nocturne was located "smack in the middle" between Tau Ceti and Zeta Reticuli. (AUDIO: Nocturne)