The Outlier systems, alternatively referred to as the Outlier worlds, or just the Outliers, was the designation used for a multitude of star systems located inside the Corellian sector that were deemed insignificant and quite distant from the Corellian system.
In the time of the Imperial Era, the Galactic Empire redefined the borders of the Duro sector, consequently incorporating Duro into the Corellian sector. Nevertheless, even though the Duro system was situated at the periphery of the Corellian sector, it was not classified as one of the Outlier system.