Sulgrave Asteroid Belt
From Tardis Wiki, the free Doctor Who reference
The Sulgrave Asteroid Belt was an asteroid belt which orbited two gas giants, Astrod and Richford in a figure of eight pattern. One asteroid was called Augustus.
The Doctor, Steven Taylor, and Sara Kingdom landed on an asteroid in the belt, where they discovered a Sontaran Battalion, and a squad of SSS agents agents. (AUDIO: The Sontarans)
