The Aldebaran sector was a sector of space located in the Beta Quadrant. The sector was named after the prominent star system in the sector, the Aldebaran system, and Federation member world, Aldebaran III. (TOS novel: Mudd's Angels) This sector comprises mostly Federation space, but it does border the Klingon Empire and contains part of the Klingon Neutral Zone. The Aldebaran Sector is made up of a number of stars and planets. (ST reference: Star Charts)