(278361) 2007 JJ43


Jpldata::brown    Dwarf::kuiper    Title::astdys    Planet::albedo    AstDyS-E::author    Thinsp::johnston


(268361) 2007 JJ43 is a trans-Neptunian object (TNO) orbiting the Sun near the outer edge of the Kuiper belt. Based on how bright it appears, it is a possible dwarf planet.

Its discovery images were taken in 2007, and its absolute magnitude of 4.4 is one of the twenty brightest exhibited by TNOs. Assuming it has a typical albedo, this would make it roughly the same size as Ixion (about 650–800 km diameter). Mike Brown's website lists it as a "highly likely" dwarf planet,<ref name="Brown-dplist">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> but its diameter has never been measured.

Observations by Brown in 2012, using the W. M. Keck Observatory, suggest that (278361) 2007 JJ43 does not have a companion.<ref name="plutokiller">{{#invoke:citation/CS1|citation |CitationClass=web }} (moonless)</ref>

As of 2014, it is about 41.3 AU from the Sun.<ref name="AstDyS-E" />

(278361) 2007 JJ43 sections
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