- You may be looking for Proxima Centauri (planet).
Proxima Centauri was nearest star to the Sol system (AUDIO: The First Wave) and consequently the first extrasolar star to be visited by humanity. Susie Fontana Brooke reached the star some time after 2059 onboard the first lightspeed ship. (TV: The Waters of Mars)
It was the primary star of the Proxima System. (AUDIO: The Dalek Contract)
Luparis was the third planet orbiting Proxima Centauri. It was the closest solar system to Earth's. (AUDIO: Hexagora)