小行星52872

52872 Okyrhoe
发现
發現者太空監視
發現日期1998年9月19日
編號
小行星分類半人馬小行星[1][2][3]
軌道參數
曆元 2008年11月30日 (儒略日 = 2454800.5)
遠日點10.934 AU
近日點5.799 AU
半長軸8.366 AU
離心率0.3068
軌道週期24.20 yr
平均軌道速度?
平近點角12.55
軌道傾角15.65
升交點黃經173.1
近日點參數338.0
物理特徵
大小48公里[4]
質量?
平均密度?
?
自轉週期16.6小時[1]
反照率0.03[5]
光譜類型?
絕對星等(H)10.8[1]

小行星52872 （52872 Okyrhoe，发音为/əˈkɪroʊi/）是一顆軌道在外太陽系的木星和海王星之間的半人馬小行星。它在1998年9月19日在太空監視計畫中被發現。

小行星52872以希臘神話的人物奧喀羅埃（Okyrhoe）命名。

軌道

半人馬小行星因為與大行星的交互作用，因此只有短暫的動力學生命。估計Okyrhoe (1998 SG35)得半生命期約為67萬年[6]。

在小行星中心（MPC）[3]、噴射推進實驗室（JPL）[1]和深度黃道巡天（DES）列出的半人馬小行星中，它的近日點距離是地暗接近太陽的。最近發現的2008 QD4有著接近太陽的近日點距離。

52872 Okyrhoe在2008年初經過近日點，亮度引人注意。

昇華

Okyrhoe 在2008年初通過近日點[1]，並且在2008年3月和4月展現出重大的光度變化[7]，這可能是揮發物昇華的標誌。

參考資料

  1. ^ 1.0 1.1 1.2 1.3 1.4 JPL 小天體資料庫瀏覽：52872 Okyrhoe (1998 SG35). 2008-06-06 [2008-10-11]. （原始内容存档于2020-09-17）. 
  2. ^ Marc W. Buie. Orbit Fit and Astrometric record for 52872. SwRI (Space Science Department). 2008-04-24 [2008-10-11]. （原始内容存档于2013-01-28）. 
  3. ^ 3.0 3.1 List Of Centaurs and Scattered-Disk Objects. Minor Planet Center. [2008-10-16]. （原始内容存档于2008-05-10）. 
  4. ^ Wm. Robert Johnston. List of Known Trans-Neptunian Objects. Johnston's Archive. 22 August 2008 [2008-10-11]. （原始内容存档于2009-06-24）. 
  5. ^ 互联网档案馆的存檔，存档日期2011-05-19. (word format)
  6. ^ Horner, J.; Evans, N.W.; Bailey, M. E. Simulations of the Population of Centaurs I: The Bulk Statistics. 2004 [2008-10-12]. （原始内容存档于2019-08-10）. 
  7. ^ Trigo-Rodríguez, Melendo, García-Hernández, Davidsson, Sánchez. A continuous follow-up of Centaurs, and dormant comets: looking for cometary activity. (PDF). European Planetary Science Congress. 2008 [2008-10-12]. （原始内容 (PDF)存档于2012-07-03）. 

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