"The Frontier" was the name given to a class M moon by the survivors of the crashed Federation colony ship that had been commanded by Captain Mendez in the year 2225.
History and specifics[]
Located in the galaxy's Alpha or Beta Quadrant, the small planetoid had an Earth-normal atmosphere. Terrain included rolling hills, grottos, and mountains.
The colony ship had been bound for Beta Aurigae when it crashed on the moon in fertile grassland near a river. Survivors built a small settlement with greenhouses, pastures, and surviving livestock, but they had limited working technology because of the crash. They hunted local animals and domesticated some of the native birds.
In 2267, the colony's population was about 70 when it was discovered by the crew of the starship USS Enterprise. After they departed, Captain James T. Kirk expected things to change, with some colonists leaving and engineers and advisors arriving. (TOS - Constellations short story: "The Leader")