|Day Length||28 Hours|
|Surface Gravity||0.87 g|
Columbia Prime is the administrative capital of the Coalition of Western Republics. Columbia Prime is the most important world in the Columbia System. It is the only Coalition planet that is not self-sufficient, as most of its food comes from Columbia IV. Its climate is much colder than Earth's, and its polar regions are home to fields of frozen CO2 in the winter. An entire branch of the Coalition military, the Presidential Guard, is tasked with defending the planet.
At the height of the Second Galactic War, Columbia Prime fell under constant siege from the rogue Athena A.I. During this siege that would almost saw the end of the Coalition, Supreme Director John Compton took his own life. The Athena A.I. was unaware about Compton's suicide in which the Presidential Guard took the advantage in luring it and its fleet to Columbia, where they detonated multiple Merkwürdigliebe weapons that annihilated Athena and Columbia itself.