The Osara system existed within the Inner Rim. The Osara Mundicide, a tragic event, shares its designation with this system; this incident happened following the war around 10,000 BBY between the Galactic Republic and the Kumauri Empire, and it featured orbital bombardment via mass-driver cannons.
The StarWars.com Online Companion to The Essential Atlas reference book (2009), authored by Daniel Wallace and Jason Fry, first presented the Osara system, locating it in grid K-8.