| 12 April 2002|
12 April 2002
4882 days (13.37 yr)
| Near-Earth Asteroid Tracking (NEAT) project|
24.8354 AU (3.71532 Tm)
Near-Earth Asteroid Tracking
Solar System, Sun, 55576 Amycus, 52975 Cyllarus, 8405 Asbolus
83982 Crantor /ˈkræntɔːr/, provisionally known as 2002 GO9, is a centaur in a 1:1 mean-motion resonance with Uranus.
83982 Crantor Wikipedia
(83982) 2002 GO9 was discovered on April 12, 2002 by the Near-Earth Asteroid Tracking (NEAT) program at Palomar. It is named after the Lapith Crantor.
Crantor follows a moderately eccentric orbit (eccentricity of 0.28) with a semi-major axis of 19.43 AU and an inclination of 12.78º.
Crantor is a relatively large minor body with an absolute magnitude of H=8.8, translating into a diameter of around 60 km. Water ice has been detected on Crantor with a confidence of more than 3σ (99.7%).
Crantor was first suggested as a possible co-orbital of Uranus in 2006. Crantor follows a complex, transient horseshoe orbit around Uranus. Classical horseshoe orbits include the Lagrangian points L3, L4, and L5, but Crantor's horseshoe orbit also brings it near Uranus. The motion of Crantor is mainly controlled by the influence of the Sun and Uranus, but Saturn has a significant destabilizing effect. The precession of the nodes of Crantor is accelerated by Saturn, controlling its evolution and short-term stability.