Hilda group

The Hilda group is a collection of asteroids located beyond the main asteroid belt, with mean distances from the Sun ranging between approximately 3.28 and 5.3 AU. These asteroids have orbital periods that are a significant fraction of Jupiter's orbital period, with some completing more than half of Jupiter's orbit in the time it takes Jupiter to complete one. The Hilda group is named after the lowest-numbered asteroid within the group and is one of four known groups of outer-belt asteroids, alongside the Cybeles, Thules, and Trojans. These groups are distinct from asteroid families, which share a common parent asteroid. The orbits of the Hilda asteroids are stabilized by a mean-motion resonance with Jupiter, specifically a 3:2 resonance.12