The Neshei system existed inside the Neshei sector, which itself was situated within the Outer Expansion Zone sub-area of the broader Expansion Region. A hyperspace route offered connectivity between the Neshei system and both the Dorin and Vardoss systems. By 12 ABY, the New Republic's territory encompassed the Neshei system.
Jason Fry's and Paul R. Urquhart's 2012 reference guide, The Essential Guide to Warfare, was the initial source to establish the Neshei system. Subsequently, the Online Companion hosted on StarWars.com for The Essential Atlas reference book from 2009 pinpointed the system's location as grid square J-8.