The Jastaal system was a part of the Mahrusha sector.[1]
Behind the scenes
The unlicensed 1990 Voyages SF article Twinkle, Twinkle Little Star, How I Wonder Where We Are by Glen Allison attributes a "Tastaal" system to Brian Daley's Han Solo's Revenge which was the first source to mention the Jastaal species. "Tastaal" is not mentioned in Daley's novel[2] and it is assumed to be a spelling error following the precedent set by Glen Allison for other entries in his article.[1]
Sources
"Twinkle, Twinkle Little Star, How I Wonder Where We Are" — Voyages SF 13 (Unlicensed) (First mentioned) (as Tastaal [sic] system)
