Beta XII-A

Beta XII-A was the uninhabited twelfth planet orbiting the primary Beta Leonis Minoris. This system was located near the Federation-Klingon border, in the Alpha Quadrant.

In 2256, this planet was mentioned with the star Beta Leonis Minoris's name on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the USS Discovery. 

In 2268, the crew of the USS Enterprise (NCC-1701) answered a distress call from a colony. There were a hundred men, women, and children in this colony. According to the distress call, they were under attack by an unidentified starship. When a Klingon battle cruiser was detected approaching this planet, James T. Kirk assumed that the Klingons were responsible for the attack. The Klingons steadfastly denied any involvement in the destruction of the colony.

The incident was later determined to be a fabrication created by an entity to incite a feud between the crews of the Enterprise and the Klingon battle cruiser.