None of the info here is sourced.
Alpha Centauri system
Talk about it here.
The planet Alpha Centauri Five was located in the Alpha Centauri system, (PROSE: Lucifer Rising) as was the planet Glox, part of the Gloxxian Empire, which included the Alpha Centauri system, and many more besides. (AUDIO: I Am The Master)
Wayne Bland II (in Panda's body) once suggest that he and Iris Wildthyme lie to Kragoom that there was a planetoid in the Alpha Centauri system that fancied him. (AUDIO: The Iris Wildthyme Appreciation Society)