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(307261) 2002 MS4 : ウィキペディア英語版 | (307261) 2002 MS4
is a large classical Kuiper belt object,〔 the second-largest known object in the Solar System without a name, after . It was discovered in 2002 by Chad Trujillo and Michael Brown. Brown's website lists it as nearly certain to be a dwarf planet.〔 〕 The Spitzer Space Telescope estimated it to have a diameter of .〔 The Herschel team estimates it to be , which would make it one of the 10 largest TNOs currently known〔 and large enough to be considered a dwarf planet under the 2006 draft proposal of the IAU.〔 〕 It is currently 47.2 AU from the Sun〔 and will come to perihelion in 2123.〔 It has been observed 55 times, with precovery images back to 1954.〔 == References ==
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