Frontios

Located in the Veruna system.

At the very periphery of the Time Lords sphere of knowledge, it became home to a fledgling colony of human refugees who fled the collision of Earth with the sun in a ship captained by Captain Revere.

Frontios was not the original destination of the colony ship, but it was pulled off-course by the Tractators (lead by the Gravis) and crashed into the planet, where the surviving crew and colonists were bombarded with meteors, and randomly selected for enslavement in the Tractator's mining machines. ('Frontios_%28TV_story%29')