准希尔达彗星147 P/串田村松：木星长期临时捕获的另一颗卫星
Quasi-Hilda Comet 147P/Kushida-Muramatsu: Another long temporary satellite capture by Jupiter
摘要：
类希尔达彗星（QHC）处于不稳定的3：2木星平均运动共振状态，被认为是木星暂时捕获卫星（TSC）的主要原因。虽然QHC可能是逃逸的希尔达小行星，但它们的起源和性质尚未得到足够详细的研究。特别令人感兴趣的是长TSC/轨道器。轨道器-其中至少有一个完整的旋转地球是完成-是罕见的天文事件;只有四个已知发生在过去几十年。每个病例都与QHC有关：82 P/Gehrels 3; 111 P/Helin-Roman-Crockett; P/1996 R2（Lagerkvist）;以及可能源自QHC的D/1993 F2（Shoemaker-Levy 9，SL 9）。我们专注于长期TSC/轨道器事件涉及QHC和木星。因此，我们调查已知的QHC，寻找更长的TSC/轨道器在过去的一个世纪。首先，我们确认了82 P，111 P和1996 R2的长TSC/轨道器事件，以测试我们的方法对以前的工作，应用一般的N体牛顿代码。然后，我们使用相同的程序来调查剩余的已知QHC和搜索长TSC/轨道器事件。我们新发现了另一个长TSC/轨道器：147 P/串田村松，从1949年5月14日（+97天/-106天）到1961年7月15日。我们的结果是验证了243克隆轨道，考虑到目前的轨道不确定性，这颗彗星的积分。这是第三个长TSC和第五个轨道器被发现，因此涉及木星的长TSC/轨道器事件每十年发生一次。围绕木星的两次完整旋转完成，捕获持续时间为12.17（+0.29/-0.27）年;这两个数字都将147 P列为第三长TSC/轨道器事件，仅次于SL 9和111 P。这项研究也证实了QHC地区的重要性，作为一个动态的路线进出木星TSC，通过希尔的领域。
英文摘要：
The quasi-Hilda comets (QHCs), being in unstable 3:2 Jovian mean motion resonance, are considered a major cause of temporary satellite capture (TSC) by Jupiter. Though the QHCs may be escaped Hilda asteroids, their origin and nature have not yet been studied in sufficient detail. Of particular interest are long TSCs/orbiters. Orbiters -- in which at least one full revolution about the planet is completed -- are rare astronomical events; only four have been known to occur in the last several decades. Every case has been associated with a QHC: 82P/Gehrels 3; 111P/Helin-Roman-Crockett; P/1996 R2 (Lagerkvist); and the possibly QHC-derived D/1993 F2 (Shoemaker-Levy 9, SL9). We focus on long TSC/orbiter events involving QHCs and Jupiter. Thus we survey the known QHCs, searching for further long TSCs/orbiters over the past century. First, we confirmed the long TSC/orbiter events of 82P, 111P, and 1996 R2 in order to test our method against previous work, applying a general N-body Newtonian code. We then used the same procedure to survey the remaining known QHCs and search for long TSC/orbiter events. We newly identified another long TSC/orbiter: 147P/Kushida-Muramatsu from 1949 May 14 (+97days/-106 days)--1961 July 15. Our result is verified by integrations of 243 cloned orbits which take account of the present orbital uncertainty of this comet. This is the third long TSC and the fifth orbiter to be found, thus long TSC/orbiter events involving Jupiter have occurred once per decade. Two full revolutions about Jupiter were completed and the capture duration was 12.17 (+0.29/-0.27) years; both these numbers rank 147P as third among long TSC/orbiter events, behind SL9 and 111P. This study also confirms the importance of the QHC region as a dynamical route into and out of Jovian TSC, via the Hill's sphere.
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