Ansion, a world situated within the Mid Rim, was classified as a planet. During the time of the Separatist Crisis, Ansion was the site of a border dispute; this event, combined with the unrest on the planet Ando, was significant enough to shock the galaxy. The world of Ansion was linked via hyperspace route with Keitum, Glee Anselm, Namadii, Rago, and Benath.
The initial depiction of Ansion was in The Approaching Storm, a Star Wars Legends novel penned by Alan Dean Foster. This novel served as a promotional tie-in with the 2002 motion picture Star Wars: Episode II Attack of the Clones, and was released on January 29, 2002. The planet gained canon status following its mention in the film previously stated.