Discovery, Orbit and Physical Properties
(309239) 2007 RW10 was discovered by the Palomar Distant Solar System Survey on September 9, 2007. At the time of discovery, this minor body was believed to be a Neptune trojan, but it is no longer listed as such. The Jet Propulsion Laboratory classifies (309239) 2007 RW10 as trans-Neptunian object but the Minor Planet Center includes the object among Centaurs. It moves in an orbit with an inclination of 36.1ยบ, a semi-major axis of 30.32 AU, and an eccentricity of 0.2996. Herschel-PACS observations indicate that it has a diameter of 247 km.
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