2012 FC71

2012 FC71
发现
發現者A. Boattini (萊蒙山巡天)
發現日期2012年3月31日
編號
MPC編號2012 FC71
小行星分類阿登 NEO[1][2]
地球掠過者
軌道參數[2][3][4]
曆元 2013年4月18日 (JD 2456400.5)
遠日點1.07629AU
近日點0.9028 AU
半長軸0.98953 AU
離心率0.0877
軌道週期0.98 y (359.536 d)
平近點角186.20°
軌道傾角4.97°
升交點黃經38.708°
近日點參數347.76°
物理特徵
大小20-40 m[a][5]
絕對星等(H)25.2[2]

2012 FC71,也可以寫為2012 FC71,是一顆受限在古在機制而與地球有著古在諧振小行星[6]

發現、軌道和物理性質

他是在2012年331日被波提尼萊蒙山巡天觀測中發現的[7][8]。 它的軌道特徵是低離心率(0.088)、低軌道傾角(4.97º)和0.9895天文單位的軌道半長軸[8]。它是一顆阿登小行星,並且也是一顆掠地小行星 。迄2013年5月11日,他的軌道是依據跨越21天弧長的35次觀測計算而得。

古在共振和未來的軌道演化

2012 FC71被鎖定在古在諧振,因此它有著非常緩慢的軌道演變,並且它將在現存軌道上相對而言不受攝動的存在數十萬年[6]。它曾經在2012年4月18日接近地球至0.076天文單位,而在2013年5月21日更接近至0.057天文單位

來源

它可能是起源於金星-地球-火星區域內,或是像其它近地小行星一樣來自主帶,然後再成為與地球共軌的小行星之前,經歷阿莫爾型小行星的轉換[6]

相關條目

註解

  • ^ This is assuming an albedo of 0.20–0.04.

參考資料

  1. ^ List Of Aten Minor Planets. [2013-09-23]. (原始内容存档于2010-06-14). 
  2. ^ 2.0 2.1 2.2 2012 FC71 at the JPL Small-Body Database
  3. Retrieved 2013-05-11
    
  4. ^ AstDys-2 on 2012 FC71页面存档备份,存于互联网档案馆) Retrieved 2013-05-11
  5. ^ NEODyS-2 on 2012 FC71页面存档备份,存于互联网档案馆) Retrieved 2013-05-11
  6. ^ Absolute-magnitude conversion table (H). [2013-09-23]. (原始内容存档于2009-12-17). 
  7. ^ 6.0 6.1 6.2 de la Fuente Marcos, C.; de la Fuente Marcos, R. A resonant family of dynamically cold small bodies in the near-Earth asteroid belt. Monthly Notices of the Royal Astronomical Society: Letters. July 2013, 434 (1): L1–L5 [2013-09-23]. Bibcode:2013MNRAS.434L...1D. arXiv:1305.2825可免费查阅. doi:10.1093/mnrasl/slt062. (原始内容存档于2019-09-06). 
  8. ^ Discovery MPEC. [2013-09-23]. (原始内容存档于2017-02-04). 
  9. ^ 8.0 8.1 MPC data on 2012 FC71. [2013-09-23]. (原始内容存档于2016-03-03). 
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