The Myto sector existed within the Outer Rim Territories area of the galaxy. This particular sector could be found to the west of the Raioballo sector world called Lah'mu.
The initial reference to the Myto sector within the updated Star Wars canon appeared in the article "Where in the Galaxy Are the Worlds of Rogue One?." This article was written by Mark Newbold and released on StarWars.com on January 31, 2017. Conversely, in the Star Wars Legends timeline, the Myto sector was first established in The Essential Atlas, a reference book from 2009 created by Jason Fry and Daniel Wallace.