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(145480) 2005 TB190 : ウィキペディア英語版 | (145480) 2005 TB190
, provisionally known as 2005 TB190, is a trans-Neptunian object (TNO) with an absolute magnitude of 4.4,〔 making it a likely dwarf planet.〔 == Orbit ==
is classified as scattered-extended by the Deep Ecliptic Survey (DES), because its orbit appears to be beyond significant gravitational interactions with Neptune's current orbit.〔 However, if Neptune migrated outward, there would have been a period when Neptune had a higher eccentricity. The aphelion of lies at 104 AU.〔 Simulations by Emel’yanenko and Kiseleva in 2007 showed that appears to have less than a 1% chance of being in a 4:1 resonance with Neptune.〔 It has been observed 202 times over seven oppositions.〔 It will come to perihelion in January 2017.〔 There are precovery observations dating back to November 2001.
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