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小行星87269

(87269) 2000 OO67
发现
发现者托洛洛山美洲际天文台
发现日期2000年7月29日
编号
其它名称
小行星分类TNO
半人马小行星[1]
轨道参数
历元 2006年12月31日 (JD 2454100.5)
远日点159,800.258 Gm (1068.199 AU)
近日点3,106.523 Gm (20.766 AU)
半长轴81,453.391 Gm (544.482 AU)
离心率0.962
轨道周期4,640,599.188 d (12,705.27 a)
平均轨道速度0.88 公里/秒
平近点角0.049°
轨道倾角20.071°
升交点黄经142.315°
近日点参数212.314°
物理特征
大小28-87公里
质量2.3-69×1016? 公斤
平均密度2.0? 公克/cm³
表面重力0.0078-0.024? 米/秒²
0.015-0.046?公里/秒
自转周期? 日
反照率0.10?
温度~12 K
光谱类型?
绝对星等(H)9.13

(87269) 2000 OO67(也可以书写为(87269) 2000 OO67)是一颗小的 海王星外天体,于2000年的深度黄道巡天中被发现。

它以高离心率著称,远日点的距离超过1,000天文单位,而近日点只有21天文单位,最接近太阳时几乎就跨越在天王星的轨道上。2000 OO67可能是由岩石和冰组成,有些天文学家将它分类为半人马小行星 [1][2]

2000 OO67在2005年4月经过近日点[1][3][4]

2000 OO67和2006 SQ372两者绕行太阳的周期都比Sedna还要长。

参考资料

[编辑]
  1. ^ 1.0 1.1 1.2 Marc W. Buie. Orbit Fit and Astrometric record for 87269. Deep Ecliptic Survey. 2004-08-23 [2008-05-18]. (原始内容存档于2012-04-02). 
  2. ^ Structure and Dynamics of the Centaur Population: Constraints on the Origin of Short-Period Comets[永久失效链接]
  3. ^ Yeomans, Donald K. Horizons Online Ephemeris System. California Institute of Technology, Jet Propulsion Laboratory. [2008-01-25]. (原始内容存档于2012-02-20). 
  4. ^ JPL Small-Body Database Browser: 87269 (2000 OO67). 2004-09-29 [2008-05-18]. (原始内容存档于2020-11-24). 

外部链接

[编辑]

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小行星87269
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