The Esstran sector first canonically appeared in the Star Wars: The Clone Wars episode "Sacrifice," which was released on Netflix on March 7, 2014, as part of the show's sixth season, of which it is the thirteenth and final episode. The sector was first identified in the 2017 reference book Star Wars: Smuggler's Guide, written by Daniel Wallace.
In the Legends continuity, the Esstran sector first appeared in The Empire Strikes Back Monthly 149, and was first identified in the Star Wars: The Essential Atlas Online Companion, published on StarWars.com.
The Esstran sector first canonically appeared in the Star Wars: The Clone Wars episode "Sacrifice," which was released on Netflix on March 7, 2014, as part of the show's sixth season, of which it is the thirteenth and final episode. The sector was first identified in the 2017 reference book Star Wars: Smuggler's Guide, written by Daniel Wallace.
In the Legends continuity, the Esstran sector first appeared in The Empire Strikes Back Monthly 149, and was first identified in the Star Wars: The Essential Atlas Online Companion, published on StarWars.com.
- Star Wars: Smuggler's Guide