Ss:2004 XR190

Solar System Scratchpad [Boiler Plate]

Possible dwarf planet with half of Pluto's mass nicknamed "Buffy". It orbits beyond the Kuiper Cliff, and is detached. It has an unusually low eccentricity (varies 52 to 62 AU), but is the largest object inclined over 45 degrees. Quite bright compared to most KBOs. It's position challenges solar system formation theories.

Ss:2004 XR190 Web Pages

• http://en.wikipedia.org/wiki/2004_XR190

Ss:2004 XR190 In the News

Object Found in Inclined Circular Orbit Beyond Kuiper Belt (Dec 2005)

• http://www.space.com/1876-solar-system-crazier.html