Min I is the rogue planet that forms the heart of the unclaimed Min system. Like other rogue planets, it may have been ejected from its original planetary system, or it may have formed without ever having been gravitationally bound to a star. Its four moons suggest that it may have had its own accretion disk.
Although there is no sun to create light, tidal heating generates enough friction in the interiors of Min I's two inner moons to sustain ongoing geological activity, creating conditions that have given rise to life on Min 1b.