The Zeolosia system existed within the Hallu sector, which itself was a subsector of the larger Mulgard sector. This entire region was situated in the Trailing Sectors section of the Mid Rim, and served as the native world for the sentient Zeolosian species.
Daniel Wallace and Jason Fry first presented the Zeolosia system to the public in their 2009 reference book titled The Essential Atlas, locating it within grid coordinate N-16.