Assessing the risk of potentially hazardous asteroids through mean motion resonances analyses

Li, Miao; Huang, Yukun; Gong, Shengping

doi:10.1007/s10509-019-3557-5

Cited by 13 publications

(6 citation statements)

References 44 publications

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“…Mean motion resonances (MMRs) have been confirmed to play a significant role in the dynamical evolutions of both the solar system and exoplanets (Murray & Dermott 1999;Morbidelli 2002;Beauge et al 2003;Ferraz-Mello et al 2006). Asteroids in MMRs are very common not only with Jupiter, but also with other planets (Gallardo 2006(Gallardo , 2014Li et al 2019). Morbidelli et al (1995) analyzed the dynamical behavior of asteroid families close to MMRs with the planets.…”

Section: Introductionmentioning

confidence: 99%

Survey of asteroids in retrograde mean motion resonances with planets

Huang

Gong

2019

A&A

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Aims. Asteroids in mean motion resonances (MMRs) with planets are common in the solar system. In recent years, increasingly more retrograde asteroids are discovered, several of which are identified to be in resonances with planets. We here systematically present the retrograde resonant configurations where all the asteroids are trapped with any of the eight planets and evaluate their resonant condition. We also discuss a possible production mechanism of retrograde centaurs and dynamical lifetimes of all the retrograde asteroids. Methods. We numerically integrated a swarm of clones (ten clones for each object) of all the retrograde asteroids (condition code U < 7) from −10 000 to 100 000 yr, using the MERCURY package in the model of solar system. We considered all of the p/−q resonances with eight planets where the positive integers p and q were both smaller than 16. In total, 143 retrograde resonant configurations were taken into consideration. The integration time was further extended to analyze their dynamical lifetimes and evolutions. Results. We present all the meaningful retrograde resonant configurations where p and q are both smaller than 16 are presented. Thirty-eight asteroids are found to be trapped in 50 retrograde mean motion resonances (RMMRs) with planets. Our results confirm that RMMRs with giant planets are common in retrograde asteroids. Of these, 15 asteroids are currently in retrograde resonances with planets, and 30 asteroids will be captured in 35 retrograde resonant configurations. Some particular resonant configurations such as polar resonances and co-orbital resonances are also identified. For example, Centaur 2005 TJ50 may be the first potential candidate to be currently in polar retrograde co-orbital resonance with Saturn. Moreover, 2016 FH13 is likely the first identified asteroid that will be captured in polar retrograde resonance with Uranus. Our results provide many candidates for the research of retrograde resonant dynamics and resonance capture. Dynamical lifetimes of retrograde asteroids are investigated by long-term integrations, and only ten objects survived longer than 10 Myr. We confirmed that the near-polar trans-Neptunian objects 2011 KT19 and 2008 KV42 have the longest dynamical lifetimes of the discovered retrograde asteroids. In our long-term simulations, the orbits of 12 centaurs can flip from retrograde to prograde state and back again. This flipping mechanism might be a possible explanation of the origins of retrograde centaurs. Generally, our results are also helpful for understanding the dynamical evolutions of small bodies in the solar system.

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Section: Introductionmentioning

confidence: 99%

Survey of asteroids in retrograde mean motion resonances with planets

Huang

Gong

2019

A&A

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“…Two transfer scenarios are analyzed departing from the Earth's orbit toward those of potentially hazardous asteroids. Such asteroids have been thoroughly observed and studied because of their high collision probability with the Earth [29] and to characterize their physical and dynamical properties in order to choose a suitable strategy to deflect or destroy the small celestial body. For this reason, the recent literature [5,6] has also proposed them as candidate targets of space missions.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Shape-based approach for solar sail trajectory optimization

Caruso

Quarta

Mengali

et al. 2020

Aerospace Science and Technology

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“…Эти объекты справедливо привлекают внимание ученых, поскольку могут сближаться с нашей планетой не только в окрестности узлов. Авторы статьи [18] изучают потенциально опасные астероиды и отмечают, что резонансные объекты представляют меньшую угрозу для Земли.…”

Section: заключениеunclassified

Mean Motion and Secular Resonances in the Motion of Near-Earth Asteroids

Galushina¹

2020

Proceedings of the 48-Th International Student's Conferences "Physics of Space"

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Assessing the risk of potentially hazardous asteroids through mean motion resonances analyses

Cited by 13 publications

References 44 publications

Survey of asteroids in retrograde mean motion resonances with planets

Survey of asteroids in retrograde mean motion resonances with planets

Shape-based approach for solar sail trajectory optimization

Mean Motion and Secular Resonances in the Motion of Near-Earth Asteroids

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