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彗星133P

7968 Elst-Pizarro
133P/Elst-Pizarro
发现
发现者M. R. S. Hawkins and 罗伯特·麦克诺特[1] and/or S. J. Bus [2]
(as 1979 OW7)
as well as 艾瑞克·怀特·埃尔斯特 and Guido Pizarro (as 1996 N2)
发现日期1979年7月24日 (as 1979 OW7) [3] and 1996年7月14日 (as 1996 N2)
编号
其它名称1996 N2, 1979 OW7
小行星分类主带彗星
轨道参数
历元 2006年9月22日(儒略日 2454000.5)
远日点550.548 Gm (3.680 AU)
近日点395.073 Gm (2.641 AU)
半长轴472.811 Gm (3.161 AU)
离心率0.1644
轨道周期2052.262 d (5.62 a)
平均轨道速度16.64 km/s
平近点角310.762°
轨道倾角1.386°
升交点黄经160.220°
近日点参数132.138°
物理特征
自转周期0.1446 d (3.471 h) [4]
绝对星等(H)14

彗星133P(133P/Elst-Pizarro),是一颗周期彗星

于1979年发现,最初认为是小行星,临时名称为1979 OW7,其后编为7968。它的轨道位于火星木星之间的小行星带离心率为0.165。但在1996年,由天文学家艾瑞克·怀特·埃尔斯特和Pizarro拍得的照片显示,该天体在通过近日点时出现彗尾。

除此彗星外,尚有四颗天体同时列入小行星和彗星的名单中,分别为(2060)开朗=95P/开朗(4015)威尔逊-哈灵顿=107P/Wilson-Harrington、(60558)厄开克洛斯=174P/Echeclus和(118401) LINEAR=176P/LINEAR。

相关条目

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参考文献

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周期彗星
前一颗彗星
132P/Helin-Roman-Alu
彗星133P 后一颗彗星
134P/Kowal-Vávrová
周期彗星列表
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彗星133P
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