Resonant amplitude distribution of the Hilda asteroids and the free-floating planet flyby scenario

In some recent work, we provided a quantitative explanation for the number asymmetry of Jupiter Trojans by hypothesizing a free-floating planet (FFP) flyby into the Solar System. In support of that explanation, this paper examines the influence of the same FFP flyby on the Hilda asteroids, which orb...

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Bibliographic Details
Published in:Icarus (New York, N.Y. 1962) N.Y. 1962), 2025-01, Vol.425, p.116340, Article 116340
Main Authors: Li, Jian, Xia, Zhihong Jeff, Lei, Hanlun, Georgakarakos, Nikolaos, Yoshida, Fumi, Li, Xin
Format: Article
Language:English
Subjects:
Dynamical evolution
Free-floating planets
Hilda group
Jupiter
Solar system evolution
Solar system planets
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Summary:In some recent work, we provided a quantitative explanation for the number asymmetry of Jupiter Trojans by hypothesizing a free-floating planet (FFP) flyby into the Solar System. In support of that explanation, this paper examines the influence of the same FFP flyby on the Hilda asteroids, which orbit stably in the 3:2 mean motion resonance with Jupiter. The observed Hilda population exhibits two distinct resonant patterns: (1) a lack of Hildas with resonant amplitudes
ISSN:0019-1035
DOI:10.1016/j.icarus.2024.116340