Corellia Space Sector IV-3121 was an area of space in the Corellian system.
In 1.5 ABY, a freighter attacked by Black Sun pirates in sector OC-3101 fled to sector IV-3121, where it was rescued by a Corellian Security Force pilot who escorted the freighter to safety.
Behind the scenes
This sector is where the third mission for CorSec pilot trainer Sergeant Rhea takes place in Star Wars Galaxies: Jump to Lightspeed. The name is only mentioned in the mission's title, "Corellia System: Patrol Corellia Space Sector IV-3121".