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A new category of object that was defined by International Astronomical Union (IAU) in 2006 following the downgrading of Pluto from planet to dwarf planet status. A Plutoid is a dwarf planet that exists beyond the orbit of Neptune. It's defined as a near spherical object that hasn't cleared its orbit of small asteroids and meteoroids and has an orbit that takes it beyond Neptune.

Currently two Plutoids are known, Pluto and Eris.

Pluto from New Horizons space probe (credit:- NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute)

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