The Keldrath sector, a sector situated in the Tion Cluster part of the Outer Rim territories, resided within the galaxy.
Around 25,100 BBY, the area's discovery happened as Xim the Despot's empire expanded. Later, it became the Keldrath Alignment, a fiefdom created from the remains of Xim's empire. When the cluster became part of the Republic, the Keldrath Alignment ceased to exist. During the Old Republic era, the region was absorbed into the Tion Hegemony.
When the Galactic Empire divided the Tion Hegemony into various sectors, the sector was established encompassing the same territory as the former Keldrath Alignment.