M24 Alpha was a star system, in the Alpha or the Beta Quadrant. It lay in an otherwise unpopulated sector, 11.630 light-years from Gamma II (TOS episode: "The Gamesters of Triskelion", Decipher RPG module: Worlds). Star Trek Maps implies that the whole star system is named "M24" while only the primary star is named "M24 Alpha". Worlds mistakenly says N24. "The Gamesters of Triskelion" gives the actual name. Worlds makes Triskelion the only planet in the system.