A group of asteroids that define the outer edge of the main asteroid belt, about 4 AU from the Sun. They have become locked into their present orbits by a gravitational resonance with Jupiter: a Hilda makes exactly three orbits of the Sun for every two that Jupiter makes. The prototype is (153) Hilda, discovered in 1875 by Johanna Palisa.
Related category ASTEROIDS AND OTHER MINOR PLANETS - TYPES AND GROUPS
Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact