Statistical study of mean motion resonances and physical properties of Hungaria asteroids using FAIR

Emese Forgács-Dajka (2020.10.12-2021.12.31)

Eötvös Loránd University

Abstract: Mean motion resonances (MMRs) play an important role in shaping the dynamics of the Solar system bodies. MMRs in the Solar system usually occur between a planet and small bodies, e.g. the members of the Hilda group of asteroids are in a 3:2, while the Trojan asteroids are in a 1:1 MMR with Jupiter. Based on the geometrical meaning of the resonance variable, an efficient method has been introduced and described in Forgács-Dajka, Sándor & Érdi (2018), by which mean motion resonances can be easily found without any a priori knowledge of them. The efficiency of this method - named FAIR - is clearly demonstrated by using some known members of different families of asteroids being in mean motion resonances with a planet. The Hungaria group is a family of asteroids in the main asteroid belt orbiting the Sun between the orbit of Mars and that of Jupiter. In this research we systematically apply the method FAIR to the Hungaria family objects to identify the dynamically relevant MMRs between them and Jupiter or Mars. Our investigation may help to find possible new subfamilies of the Hungaria group based on resonance, and besides, we examine whether there is any correlation between the physical properties and the dynamical parameters of asteroids.

Publication: Astronomy & Astrophysics, Volume 657, id.A135 DOI: 10.1051/0004-6361/202141719 arXiv: arXiv:2110.11745 Publisher link:

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