Omega Sagitta system
From Memory Alpha, the free Star Trek reference
The non-aligned Omega Sagitta system contains the twin planets that form the Coalition of Madena, Altec and Straleb. Both worlds were populated by a humanoid race which colonized the planets in the mid-2160s, and now coexist under a tenous but successful treaty. By the mid-24th century, the governments of both worlds were cognizant of the Federation and their starships.
In 2365, one of these starships, the USS Enterprise-D, made a passage through this system on her way to the next mission. (TNG: "The Outrageous Okona")
