T'Vam was the second planet in the Gunarp star system in Federation space, in the Alpha or the Beta Quadrant. It was the site of an Orion Colony and three failed Federation colonies. The planet was originally a small and mostly forgotten Orion Colony. During the Four Years War (circa 2250s), the retreating Klingons captured the planet. T'Vam was fortified, but eventually fell to the Federation's Task Force Thonat in reference stardate 1/9708. The remaining 2,000 Orion inhabitants quickly elected to join the Federation, which resulted in the arrival of new colonists. Two Federation colonies were established on the planet's surface, but both failed, with every one of 30,000 settlers left dead.