Antipose IX was an Outer Rim Territories celestial body located in the Centrality sector. The pleasure yacht Arleen made year-long tours from the Oseon system to Antipose IX and the planet Antipose XII.
Antipose IX was an astronomical object located in the Antipose system, a part of the Centrality sector in the Slice portion of the Outer Rim Territories. Along with the rest of the system, including its star, Antipose IX was connected by the Falko Run hyperlane to the Falko and Paulking systems.
The pleasure yacht Arleen, which existed by 3 BBY, made year-long tours from the Oseon system to Antipose IX as well as to the planet Antipose XII. In 3 BBY, the gambler and freighter captain Lando Calrissian rented a pilot droid to help him travel in his starship, the light freighter Millennium Falcon, from the asteroid Oseon 2795 to the planet Rafa IV in the Rafa system. Once the freighter arrived at its destination, the pilot droid addressed a non-existent audience as if it was aboard Arleen instead and claimed that the vessel was undergoing an interstellar voyage from Antipose IX. At that point, Calrissian, who had become highly annoyed with the droid, switched it off.
Antipose IX was introduced in Lando Calrissian and the Mindharp of Sharu.
Antipose IX was first mentioned in Lando Calrissian and the Mindharp of Sharu, the 1983 first entry in The Lando Calrissian Adventures trilogy of novels by L. Neil Smith. "Twinkle, Twinkle Little Star, How I Wonder Where We Are," a 1990 roleplaying game source article published in the thirteenth issue of the Voyages SF magazine, placed Antipose IX in the Seswenna sector. Since that article was released outside of the Lucas Licensing process, its canonicity within the Star Wars Legends continuity was never confirmed.
The Complete Star Wars Encyclopedia, released in 2008, also created an apparent contradiction by stating that the Antipose system, and therefore Antipose IX, was situated "not far from Centrality," despite the Wizards of the Coast roleplaying game source article "A Campaign Guide to the Centrality"—authored by Michael Kogge and published in the fifth issue of the Star Wars Gamer magazine on July 24, 2001—previously establishing that the system indeed constituted a part of the sector. The 2009 reference book The Essential Atlas subsequently overrode both the Voyages SF 13 placement and information from The Complete Star Wars Encyclopedia by placing the Antipose system in grid square U-8 as part of the Centrality.