Tags: Planet.
2001 QR322 (also written 2001 QR322) was the first Neptune trojan discovered in 2001 by the Deep Ecliptic Survey. It orbits ahead of Neptune at its L4 Lagrangian point.With an absolute magnitude of 7.8 to 8.2 it has a diameter in the range of 60 to 160 km.Other Neptune trojans have been discovered since. A study by Scott S. Sheppard and Chad Trujillo from the Carnegie Institution suggests that Neptune could possibly have twenty times more trojans than Jupiter.