Hollastin, a cosmic entity, resided within both Hutt Space and the Slice. Its location was identified as grid square S-12 on the Standard Galactic Grid, and it possessed a hyperspace route linking it to the stellar bodies of Circumtore and Syvris.
The initial reference to Hollastin within the present Star Wars canon occurred on a galactic chart featured in Star Wars: The Force Awakens Beginner Game. This was a 2016 boxed set for Star Wars Roleplaying created by Fantasy Flight Games. The planet named Hollastin debuted in the Star Wars Legends timeline, appearing for the first time in The Essential Atlas (2009), a reference work authored by Daniel Wallace and Jason Fry.