An M-class planet located in the Pelleus system, and the ancestral homeworld of the Pellean race.

As of 2376, the population was thirty-four million.

By the 2370s, the Pellean Principality had refused admission into the United Federation of Planets. A treaty had been established, which stipulated that Federation starships were not to enter Pellean space unannounced. Passage through their territory would be authorized with an escort.