The Gordian Reach, a sector situated within the Outer Rim Territories of the galaxy, encompassed the Yavin system. This system was notably the location of the Battle of Yavin which occurred above the moon known as Yavin 4 amidst the Galactic Civil War. Furthermore, the planet Arda was also a part of this sector. The sector's designation originated from an ancient hyperlane traversing through its expanse.
The initial reference to the Gordian Reach appeared in Star Wars (1977) 25 from Marvel Comics in 1979. This comic is now considered part of the Star Wars Legends continuity. Its status as canon was later affirmed by the reference book Ultimate Star Wars, which saw publication in 2015.