M43 Alpha was a star system, a trinary star located in the space of the galaxy's Beta Quadrant, in Federation space at coordinates 2.02S 6.95E. M43 Alpha's three central stars were orbited by ten planets, two of them being class M worlds—fourth planet Ekos and fifth planet Zeon. (FASA RPG module: The Federation; ST reference: The Worlds of the Federation)
- Startrek.com gives the star's name as M34 Alpha.
- M43 Alpha trinary