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Orbital evolution and possible parent asteroids of 40 instrumentally observed meteorites
Planetary and Space Science ( IF 2.4 ) Pub Date : 2023-12-08 , DOI: 10.1016/j.pss.2023.105827
Filip Hlobik , Juraj Tóth

We present the orbital evolution of 40 meteorites with known heliocentric orbits, both nominal and their clones as well. The goal of our work was to determine the stability of their orbits and to find possible connections with known near-Earth asteroids. Stability along with a probability of a random association were used to select probable candidates. We have found stable behaviour of orbits for 21 meteorites in the time interval of 100,000 years to the past (e.g. Neuschwanstein, Jesenice). Twelve meteorites displayed different orbital evolution of the nominal orbit and the clones (e.g. Almahata Sitta, Motopi Pan), but in general they were stable. There were seven meteorites on unstable orbits; 3 meteorites exhibited chaotic clone evolutions (Košice, Maribo and Novato) and 4 were on overall unstable orbits (Příbram, Sutter’s Mill, Flensburg and Arpu Kuilpu). This study suggests possible parent bodies from the currently known NEA population for 27 meteorites with very low DSH values and low probabilities of random association.



中文翻译:

40 颗仪器观测到的陨石的轨道演化和可能的母体小行星

我们展示了 40 颗已知日心轨道的陨石的轨道演化,包括名义轨道和克隆轨道。我们工作的目标是确定它们轨道的稳定性并寻找与已知近地小行星的可能联系。稳定性和随机关联的概率被用来选择可能的候选者。我们已经发现了 21 颗陨石在过去 10 万年的时间间隔内的稳定轨道行为(例如新天鹅堡、耶塞尼采)。12颗陨石显示出不同的标称轨道和克隆体(例如Almahata Sitta、Motopi Pan)的轨道演化,但总体上它们是稳定的。不稳定轨道上有七颗陨石;3 颗陨石表现出混沌克隆演化(科希策、马里博和诺瓦托),4 颗陨石处于整体不稳定轨道上(普日布拉姆、萨特磨坊、弗伦斯堡和阿尔普库伊尔普)。这项研究表明,27 颗陨石的母体可能来自目前已知的 NEA 群,其含量非常低DSH值和随机关联的低概率。

更新日期:2023-12-13
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