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(307261) 2002 MS4

(307261) 2002 MS4
2002 MS4有着比创神星更斜但相似的轨道,此图显示其于2018年1月1日的位置。
发现[1]
发现者查德·特鲁希略
迈克尔·E·布朗
发现日期2002年6月18日
编号
MPC编号2002 MS4
其它名称none
小行星分类QB1天体 (MPC)[2]
离散盘天体 (DES)[3]
轨道参数[4]
历元 June 18, 2009 (2455000.5)
远日点47.858 AU
(7159.4 Gigameters)
近日点36.004 AU
(5386.12174 Gigameters)
半长轴41.931 AU
(6272.78832 Gigameters)
离心率0.14135
轨道周期271.53 yr
平均轨道速度4.58 km/s
平近点角210.108°
轨道倾角17.693°
升交点黄经216.086°
近日点参数213.200°
物理特征
大小934 ± 47 km[5]
726 ± 123 km[6]
反照率0.051+.036
−.022
[5]
0.084+.03
−.02
[6]
温度≈43 K,-230.15℃
光谱类型B-V=0.69; V-R=0.38[7]
视星等20.6[8]
绝对星等(H)3.8[4]

小行星307261,临时编号为 2002 MS4,是太阳系中目前最大的未命名天体,前任(225088) 2007 OR10已于2020年获得名称“共工”。于2002年6月18日由查德·特鲁希略迈克尔·布朗发现。

迈克尔·布朗认为其很可能是矮行星[9]斯皮策空间望远镜观察估计它的直径为726±123 公里[6]。Herschel团队亦估计它为934±47 公里,这使它成为目前已知10个最大的海王星外天体之一[5],且其有足够大的体积而可被视为IAU 2006年草案提案中的矮行星[10]。目前其距离太阳47.2天文单位,并将在2123年到达近日点[4]

目前它已被观察55次,最早的回溯发现可以回溯至1954年4月8日[4]

参考文献

[编辑]
  1. ^ MPEC 2002-W27 : 2002 MS4, 2002 QX47, 2002 VR128. IAU Minor Planet Center. 2002-11-21 [2009-08-26]. (原始内容存档于2012-07-14). 
  2. ^ MPEC 2009-P26 :Distant Minor Planets (2009 AUG. 17.0 TT). IAU Minor Planet Center. 2009-08-07 [2009-08-31]. (原始内容存档于2010-04-10). 
  3. ^ Marc W. Buie. Orbit Fit and Astrometric record for 02MS4. SwRI (Space Science Department). 2008-05-03 using 46 of 46 observations [2009-08-31]. (原始内容存档于2011-06-04). 
  4. ^ 4.0 4.1 4.2 4.3 JPL Small-Body Database Browser: (2002 MS4). 2008-05-03 last obs [2009-08-24]. (原始内容存档于2012-04-15). 
  5. ^ 5.0 5.1 5.2 Vilenius, E., Kiss, C., Mommert, M.; et al. "TNOs are Cool": A survey of the trans-Neptunian region VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects (PDF). 2012-04-04 [2012-05-07]. (原始内容存档 (PDF)于2018-12-04). 
  6. ^ 6.0 6.1 6.2 Stansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope (2007) Preprint arXiv页面存档备份,存于互联网档案馆
  7. ^ Tegler, Stephen C. Kuiper Belt Object Magnitudes and Surface Colors. 2006-01-26 [2006-11-05]. (原始内容存档于2006年9月1日). 
  8. ^ AstDyS 2002MS4 Ephemerides. Department of Mathematics, University of Pisa, Italy. [2009-08-27]. (原始内容存档于2009-09-04). 
  9. ^ Michael E. Brown. How many dwarf planets are there in the outer solar system? (updates daily). California Institute of Technology. [2011-08-25]. (原始内容存档于2011-10-18). 
  10. ^ Gingerich, Owen. The Path to Defining Planets (PDF). Harvard-Smithsonian Center for Astrophysics and IAU EC Planet Definition Committee chair: 4. 2006-08-16 [2007-03-13]. (原始内容存档 (PDF)于2020-10-25). 
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(307261) 2002 MS4
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