AU, an eccentricity less than 0.3, and an inclination less than 25°. This group appears to cluster around the 7:4 resonance with Jupiter. Named after 65 Cybele. Hilda asteroids have a mean orbital radius between 3.7 AU and 4.2 AU, an eccentricity greater than 0.07, and an inclination less than 20°. These asteroids are in a 3:2 resonance with Jupiter. Named after 153 Hilda. The Thule asteroids are in a 4:3 resonance with Jupiter and the group is known to consist of 279 Thule, , and . The Jupiter trojans have a mean orbital radius between 5.05 AU and 5.4 AU, and lie in elongated, curved regions around the two Lagrangian points 60° ahead and behind of Jupiter. The leading point, , is called the Greek camp and the trailing point is called the Trojan camp, after the two opposing camps of the legendary Trojan War; with one exception apiece, objects in each node are named for members of that side of the conflict. 617 Patroclus in the Trojan camp and 624 Hektor in the Greek camp are "misplaced" in the enemy camps. There is a forbidden zone between the Hildas and the Trojans (roughly 4.05 AU to 4.94 AU). Aside from 279 Thule and 228 objects in mostly unstable-looking orbits, Jupiter's gravity has swept everything out of this region. Groups beyond the orbit of Jupiter Most of the minor planets beyond the orbit of Jupiter are believed to be composed of ices and other volatiles. Many are similar to comets, differing only in that the perihelia of their orbits are too distant from the Sun to produce a significant tail. The Damocloid asteroids, also known as the "Oort cloud group," are named after 5335 Damocles. They are defined to be objects that have "fallen in" from the Oort cloud, so their aphelia are generally still out past Uranus, but their perihelia are in the inner Solar System. They have high eccentricities and sometimes high inclinations, including retrograde orbits. The definition of this group is somewhat fuzzy, and may overlap significantly with comets. The Centaurs have a mean orbital radius roughly between 5.4 AU and 30 AU. They are currently believed to be trans-Neptunian objects that "fell in" after encounters with gas giants. The first of these to be identified was 2060 Chiron (944 Hidalgo was discovered before, but not identified as a distinct orbital class). Groups at or beyond