First 'Trojan' Asteroid Companion of Uranus Found

Astronomers have discovered an unexpected, novel kind of triangle in the sky — one whose points are the sun, Uranus and a first Trojan asteroid ever seen near the tilted planet. The discovery is the first known "Trojan asteroid" for Uranus.



via LiveScience.com http://www.livescience.com/39310-uranus-trojan-asteroid-discovery.html