The Delephr system resided inside the Carrion sector, which itself was situated within the New Territories region of the Outer Rim Territories. The Relgim Run hyperlane provided connectivity for the system to both the Gelda and Ord Thoden systems.
The Delephran people originated from the Delephr system. From 4 ABY to 12 ABY, it existed within the Pentastar Alignment's territory, and it was incorporated into the Imperial Remnant from 18 ABY to 35 ABY.
The reference book The Essential Atlas, penned by Jason Fry and Daniel Wallace in 2009, provided the first mention of the Delephr system, locating it in grid square J-4.