(307261) 2002 MS4


Title::brown    Kuiper::author    Dwarf::michael    Jpldata::category    TNOsCool::planets    Spitzer::planet


(307261) 2002 MS4 is a large classical Kuiper belt object,<ref name="MPEC2009-P26" /> the second-largest known object in the Solar System without a name, after 2007 OR10. It was discovered in 2002 by Chad Trujillo and Michael Brown.

Brown's website lists it as nearly certain to be a dwarf planet.<ref name="Brown-dplist"> {{#invoke:citation/CS1|citation |CitationClass=web }} </ref> The Spitzer Space Telescope estimated it to have a diameter of {{safesubst:#invoke:val|main}}.<ref name=Spitzer2007/> The Herschel team estimates it to be {{safesubst:#invoke:val|main}}, which would make it one of the 10 largest TNOs currently known<ref name=TNOsCool6 /> and large enough to be considered a dwarf planet under the 2006 draft proposal of the IAU.<ref name=IAU-draft2006> {{#invoke:citation/CS1|citation |CitationClass=web }} </ref> It is currently 47.2 AU from the Sun<ref name=AstDys/> and will come to perihelion in 2123.<ref name=jpldata />

It has been observed 55 times, with precovery images back to 1954.<ref name=jpldata />

(307261) 2002 MS4 sections
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