The Omman system, a star system situated in the Tion Cluster, included the world of Omman. During the era of the Cold War, a conflict by surrogates involving the Sith Empire and the Galactic Republic, stories circulated about a Tionese king said to be "interred" on a starship lost and floating inside the system. Ultimately, the vessel's coordinates were successfully determined, leading to its discovery by another person.