The Horuz system existed within the Atrivis sector, situated in the Outer Rim Territories.
This system encompassed both an internal and external asteroid belt, along with a pair of Bespin-type gas giants: one occupying a distant orbit, and the other a sun skimmer. It also included the planet known as Despayre. The Galactic Empire finalized the building of the battle station Death Star within the confines of this very system. The Death Star maintained an orbit around Despayre, ultimately obliterating it through the use of three blasts at thirty-three percent power.
Following her capture over Tatooine, Princess Leia Organa was transported to the Horuz system to undergo interrogation onboard the imposing battlestation.
During the Yuuzhan Vong War, the Yuuzhan Vong controlled this system.