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| discovery = yes | discovery_ref = 〔 | discoverer = A. Udalski S. S. Sheppard M. Szymanski C. Trujillo Las Campanas Observatory (304) | discovered = May 21, 2010 | mp_name = | mp_category = TNO Detached (SDO-EXT)〔 Cubewano〔 | orbit_ref = 〔〔 | epoch = September 30, 2012 (Uncertainty=5)〔 | aphelion = (Q) | perihelion = (q) | semimajor = (a) | eccentricity = | period = 302 yr | avg_speed = | inclination = | asc_node = (Ω) | mean_anomaly = 245 ± 3° (M) | arg_peri = 320.4 ± 2.6° (ω) | satellites = | physical_characteristics = yes | dimensions = ≈ 600 km (assuming an albedo of 0.10)〔 420–940 km〔〔 | mass = | density = | surface_grav = | albedo = | spectral_type = | magnitude = 20.7 〔 | abs_magnitude = 4.0 〔 }} , also written as 2010 KZ39, is a trans-Neptunian object with an absolute magnitude of 4.0.〔 Mike Brown's website lists it as likely a dwarf planet.〔 Although more research is needed, it appears to orbit the Sun every 302 years, putting it in the same range as Makemake, Chaos and other objects that circle the Sun in 6:11 resonance to Neptune. == Characteristics == It has been observed 28 times〔〔 over three oppositions〔 and, as of 2014, is 46.2 AU from the Sun.〔 Using the best-fit values for its orbit, it is expected to come to perihelion in 2109.〔 Brown assumes an albedo of 0.10, resulting in an estimated diameter of .〔 However, because the albedo is unknown and it has a preliminary absolute magnitude of 4.0,〔 its diameter could easily fall between 420 and 940 km〔 for a assumed albedo between 0.25 and 0.05, respectively.〔) 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「2010 KZ39」の詳細全文を読む スポンサード リンク
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