Centrelis was a planet located somewhere in the space of the galaxy's Alpha or Beta Quadrants, an inhabited world in the late 23rd century.
History and specifics[]
By the year 2294, Centrelis was newly admitted to the Federation, located just beyond the outskirts of Tholian territory. The Tholian Assembly claimed that the planet's orbit brought it into Tholian space thirty percent of the Centrelian year and therefore claimed that the Centrelians should turn over thirty percent of the planet's resources. (TOS novel: The Captain's Daughter)