Volanus was a star with an associated star system, located somewhere in the space of the galaxy's Alpha or Beta Quadrants. (ST video game: Starfleet Command, ST video game: Starfleet Command II: Empires at War, ST video game: Starfleet Command: Orion Pirates, ST video game: Starfleet Command III)
History and specifics
The Volanus system's orbit was the location of a planetary system, including Volanus. (ST video game: Starfleet Command III)