Castor (planet)

Castor is a class M inhabited planet of the Federation near the border of Tholian space. It was colonized by Andorian adventurers.

According to a Starfleet Academy simulation scenario, during a hypothetical Federation-Tholian war, the planet had reduced Tholian activity since Starfleet increased its patrols. When a USS Constitution ship patrolled its vicinity, when, Captain Mason of USS Fox reported the presence of Venturi renegades in a nearby sector.