The Gelgelar system existed within the Elrood sector of the Outer Rim Territories.
Within the Gelgelar system was the planet Gelgelar. Furthermore, the XQ5 Platform Hormuuz was situated there; this served as a Rebel Alliance hospital during the time of the Galactic Civil War. Imperial Admiral Wooyou Senn's Task Force Vengeance captured Hormuuz and then utilized it as a base of operations for incursions into the Airam sector.