论文标题
最近到达主要小行星带
Recent arrivals to the main asteroid belt
论文作者
论文摘要
现在，主要小行星带的区域可能已经开始空了，可以在太阳系历史上开始填充，陆地行星向外和巨型行星向内散布着材料。这些通向主皮带的动力途径今天可能仍然活跃。在这里，我们提出了一个数据挖掘实验的结果，该实验旨在挑出过去几百年来可能已经到达腰带的主要小行星带的当今成员。 Probable newcomers include 2003 BM1, 2007 RS62, 457175 (2008 GO98), 2010 BG18, 2010 JC58, 2010 JV52, 2010 KS6, 2010 LD74, 2010 OX38, 2011 QQ99, 2013 HT149, 2015 BH103, 2015 BU525, 2015 RO127, 2015 RS139, 2016 PC41, 2016 UU231、2020 SA75、2020 UO43和2021 UJ5，它们都在外带。这些候选人中的一些可能已在与木星相对较新的亲密接触后，可能已插入当前的轨道中。我们还研究了此类新来者的可能来源地区。小行星2020 UO43（如果是真实）具有不可忽略的概率，即在Oort云甚至星际空间中具有起源。小行星2003 BM1可能来自天王星附近。但是，大多数新移民（包括457175、2011 QQ99和2021 UJ5）可能起源于Centaur轨道空间。这些发现的可靠性是在可用轨道确定不确定性的背景下评估的。
The region where the main asteroid belt is now located may have started empty, to become populated early in the history of the Solar system with material scattered outward by the terrestrial planets and inward by the giant planets. These dynamical pathways toward the main belt may still be active today. Here, we present results from a data mining experiment aimed at singling out present-day members of the main asteroid belt that may have reached the belt during the last few hundred years. Probable newcomers include 2003 BM1, 2007 RS62, 457175 (2008 GO98), 2010 BG18, 2010 JC58, 2010 JV52, 2010 KS6, 2010 LD74, 2010 OX38, 2011 QQ99, 2013 HT149, 2015 BH103, 2015 BU525, 2015 RO127, 2015 RS139, 2016 PC41, 2016 UU231, 2020 SA75, 2020 UO43, and 2021 UJ5, all of them in the outer belt. Some of these candidates may have been inserted in their current orbits after experiencing relatively recent close encounters with Jupiter. We also investigated the likely source regions of such new arrivals. Asteroid 2020 UO43, if real, has a non-negligible probability of having an origin in the Oort cloud or even interstellar space. Asteroid 2003 BM1 may have come from the neighborhood of Uranus. However, most newcomers -- including 457175, 2011 QQ99, and 2021 UJ5 -- might have had an origin in Centaur orbital space. The reliability of these findings is assessed within the context of the uncertainties of the available orbit determinations.
