The third moon of Erai, a planet-like satellite, existed within the Erai system. This system was situated inside the Hangshan sector, which itself was a division of the Slice region found within the larger Expansion Region. This moon was the site of Eralam lightsaber crystal mining operations in the distant past, prior to 3956 BBY. A devastating Sith bombardment of Erai's third moon left it in ruins, making the remaining crystals exceptionally scarce.
The initial reference to Erai's third moon occurred in Star Wars: Knights of the Old Republic, the video game by BioWare released in 2003. Subsequently, the reference work The Essential Atlas, published in 2009, specified the Erai system, and consequently the third moon of Erai, as being located within grid square P-11.