Rim Worlds

The Rim Worlds seemed to be a collection of planets in a solar system.

The leisure planet Abydos was located there in the 23rd century (AUDIO: The One Doctor)

In the 24th century there were many wars occurring around this area, leaving a lot of battle cruiser debris for companies like the Search-Conv-Corp to collect. The planet Tokl was located there. (TV: Mindwarp)