M-113 (also known as Regulus VIII and Fotialla) was the fourth planet of a star system orbiting UFC-113, a yellow dwarf star. The planet was once home to an advanced humanoid civilization, as well as an indigenous species of creature known as the M-113 creature or "salt vampire". (ST reference: The Worlds of the Federation) At some time prior to 2329, a Vulcan archeological team led by T'Sera led a second expedition to the planet.(TOS novel: Vulcan's Heart)