(provisional designation ) is a trans-Neptunian object from the scattered disc, approximately in diameter, and in a rare high-order orbital resonance ratio (4:27) with Neptune. It was discovered on 13 August 2004, by American astronomer Marc Buie at the Cerro Tololo Inter-American Observatory in Chile.
orbits the Sun at a distance of 35.3âÂÂ184.6 AU once every 1153 years and 2 months (421,205 days; semi-major axis of 109.97 AU). Its orbit has a high eccentricity of 0.68 and an inclination of 15ð with respect to the ecliptic. A first precovery was taken at Cerro Tololo in 2000, extending the body's observation arc by 4 years prior to its official discovery observation.
reached perihelion on 5 October 2011 (JD 2455839.806). It has been classified as a highly unusual 4:27 resonant trans-Neptunian object, but also simply as a scattered disc object, or SCATNEAR, respectively, by the Deep Ecliptic Survey.
This minor planet was numbered (184212) by the Minor Planet Center on 20 April 2008 (). , it has not been named.
Based on a generic conversion from an absolute magnitude of 7.2, measures between 100 and 220 kilometer in diameter. Johnston's Archive estimates a mean diameter of assuming a typical albedo of 0.09.