The Jandoon system, a star system, existed within the Corva sector situated in the Outer Rim. The main planet within this system was Jandoon, the original homeworld of the Brizzit species.
Centuries prior to the Battle of Yavin, the population of Jandoon became extinct, and stories spread that the ghosts of the deceased haunted the Jandoon system. These stories generally discouraged people from visiting or traveling through the system.
The Battle of Jandoon occurred in this very system.