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1999 TR11
, also written as 1999 TR11, is a plutino (a trans-Neptunian object in 2:3 mean-motion resonance with Neptune).〔(TNO list (MPC) )〕〔(TNO list (Johnston Archive) )〕 It was discovered on October 9, 1999 by Scott Sheppard observing from Mauna Kea with the 2.2 University of Hawaii reflector.〔(Discovery MPEC: 1999 TR11 )〕 It has a perihelion at 29.775 AU and an aphelion at 49.647 AU, so it moves in a relatively eccentric orbit (0.25) and it crosses the orbit of Neptune the same as Pluto.〔( data )〕 == References ==
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「1999 TR11」の詳細全文を読む
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