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(131696) 2001 XT254 : ウィキペディア英語版 | (131696) 2001 XT254
, provisionally known as 2001 XT254, is a Kuiper belt object (KBO)〔 that has a 3:7 resonance with Neptune.〔 It will come to perihelion in January 2016.〔 Assuming a generic TNO albedo of 0.09, it is about 146 km in diameter.〔 ==Resonance== Simulations by Emel’yanenko and Kiseleva in 2007 show that is librating in a 3:7 resonance with Neptune. This libration can be stable for less than 100 million to billions of years.〔 It has been observed 22 times over 4 oppositions.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「(131696) 2001 XT254」の詳細全文を読む
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