The Star Wars: The Essential Atlas Online Companion is a series of articles on the official Star Wars website published in the wake of the release of The Essential Atlas by its authors Jason Fry and Daniel Wallace. The articles are the lists of systems that appear in the appendix of The Essential Atlas, but many systems now have an entry for which sector they are located in, a feature that the published work does not. The lists are intended to be used as a dynamic document, with updates and revisions planned to either correct erroneous information, add detail to existing placements, and add locations as new works are released. The Online Companion also included galaxy maps with the localization of the sectors by Modi.