Annamar was a planetoid situated inside an expansive asteroid field, possessing a breathable atmosphere. More information can be found on planetoids and atmospheres. Additional information about the surrounding asteroid field is also available.
During the era of the Old Republic, the planetoid housed a droid factory dedicated to creating advanced battle droids. Following its abandonment, the Rebel Alliance repurposed the factory as a strategic base from which they launched attacks targeting the Corellian Trade Spine. The Rebel Wolf Squadron brought a cargo ship to Annamar after stealing it; the ship contained a critical component of the Death Star II's weapon systems. Soon after, the Battle of Annamar occurred, during which Darth Vader destroyed the base, eliminated all personnel, and recovered the stolen component.