Mephout was a celestial object situated within the Wild Space region, specifically at coordinates H-20 on the Standard Galactic Grid.
The initial reference to Mephout within current Star Wars canon occurred via a galactic map featured in Star Wars: The Force Awakens Beginner Game. This boxed set, a Star Wars Roleplaying product by Fantasy Flight Games, was released in 2016. The Mephout system's debut was actually in the Star Wars Legends storyline, first appearing in The Essential Atlas, a 2009 reference book penned by both Daniel Wallace and Jason Fry. Later, the system was seen in The Clone Wars: Act on Instinct, a webcomic created by Pablo Hidalgo and published on StarWars.com during the second season (2009–2010) of the Star Wars: The Clone Wars animated TV show.