Tranchar, located within the Outer Rim Territories, was a celestial body. An edifice on Tranchar served as the base of operations for the Imperial Lieutenant Grapa from 3 ABY to 4 ABY; she was also linked to the Crimson Dawn criminal organization. Upon the revelation of Grapa's connection to Crimson Dawn, a crew under the command of the Sith Lord Darth Vader was dispatched to apprehend her. The crew, upon reaching the structure, found a number of individuals being tortured by the Imperials, who were then killed by two members of the crew. Before Grapa could meet the same fate, Vader appeared and interrogated the lieutenant regarding the Amidalans, a group of rebel supporters whom she had massacred some months prior.