The Gordian Reach was a sector located in the galaxy's Outer Rim Territories that contained the Yavin system, site of the Battle of Yavin above the moon Yavin 4 during the Galactic Civil War. It also contained the planet Arda. The sector took its name from an old hyperlane that passed through it.
Behind the scenes
The Gordian Reach was first mentioned in 1979 in Marvel Comics' Star Wars (1977) 25, now part of the Star Wars Legends continuity. The sector was confirmed to be canon by the reference book Ultimate Star Wars, which was released in 2015.