The Jackpot was a damaged old starship used by the Rebel Alliance for prospecting missions. While old and damaged, it was a heavily modified and unique variation on the old Corellian Engineering Corporation YT-700 Transport. The cargo and passenger space had been sacrificed for a powerful sensor suite used to scan for gas and other resources.
The ship had had many owners and users through the years, some of which had not been good at maintaining it, resulting in its poor state. The living quarters were uncomfortable and spartan.
The ship was placed under the command of a group of Rebel prospectors who were sent to Taloraan to find an alternative source of tibanna gas, now that Bespin had fallen under Imperial command. Jackpot was destroyed in a Taloraanian atmospheric storm, but its crew were saved by the friendly Taloraanian tribe known as the Denfrandi.