Senatorial Observer was a title given to junior members of the Imperial Senate when they went on missions for the Senate. Leia Organa Solo held this title when she went on a mission to the Wookiee homeworld of Kashyyyk, officially to oversee the construction of the skyhook. In reality, she was being held hostage to stop her adoptive father, Senator Bail Prestor Organa, from causing trouble in the Senate.