Trogan, a celestial body, existed within the Outer Rim Territories of the galaxy. An Imperial outpost was stationed there, and it sat in close proximity to the Galidraan system. Following the theft of the Imperial corvette Carrion Spike and its subsequent attack upon Galidraan Station, Moff Wilhuff Tarkin asked for an inventory of all Imperial assets in the vicinity that the ship could potentially target next; Trogan, along with its associated outpost, was part of the inventory he received.