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(131697) 2001 XH255 : ウィキペディア英語版 | (131697) 2001 XH255
, provisionally known as 2001 XH255, is a trans-Neptunian object (TNO) that has a 4:5 resonance with Neptune.〔 It will come to perihelion in 2041.〔 Assuming a generic TNO albedo of 0.09, it is about 100 km in diameter.〔 ==Resonance== According to the Deep Ecliptic Survey and Minor Planet Center, has a 4:5 resonance with Neptune.〔〔 It comes as close as 32.2 AU from the Sun and has a fairly low orbital eccentricity of 0.07 with an inclination of only 2.86 degrees.〔 The Neptune 4:5 resonance keeps it more than 7 AU from Neptune over a 14000-year period. It has been observed 21 times over 5 oppositions and has an orbit quality code of 3.〔
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「(131697) 2001 XH255」の詳細全文を読む
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