Application of metrics in the space of orbits to search for asteroids on close orbits

Kuznetsov, E. D.; Safronova, V. S.

doi:10.1016/j.pss.2018.04.011

Cited by 15 publications

(8 citation statements)

References 17 publications

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“…Searching for asteroid pairs with close orbits, analysis of the link to the known asteroid families, numerical simulations of dynamical evolution of paired asteroids at various semimajor axis drift values under the Yarkovsky eff ect have been carried out within the project. This paper continues the studies in the papers [6,7].…”

Section: Introductionsupporting

confidence: 80%

“…Accurate evaluation of past approach conditions between asteroids sharing close orbits requires additional awareness of their sizes, shapes, spin axes obliquity, surface thermal properties, etc. Intense positional and photometrical observations of asteroid pairs are needed for this task [6,7]. Such observations could be implemented within KASPAR project.…”

Section: Resultsmentioning

confidence: 99%

“…Substantial diff erences between close encounter time estimations of paired asteroids may arise from semimajor axis Yarkovsky drift uncertainties [6].…”

Section: Resultsmentioning

confidence: 99%

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Dynamical evolution of asteroid pairs on close orbits

Kuznetsov¹,

Glamazda²,

Kaiser³

et al. 2018

Proc. IAU

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Dynamical evolution of paired asteroids sharing close orbits was investigated. Candidates were chosen from AstDyS database by Kholshevnikov metric value. Only 33 of 105 pairs with close orbits were associated as family members. Further orbit evolution modeling was performed by Orbit9 software. Each pair had 49 overall model scenarios due to different Yarkovsky drift values for semimajor axis. Close encounters between paired objects providing time estimations and feasible mechanisms of formation were evaluated. Uncertainties of Yarkovsky drift values affected orbit evolution and caused substantial distinctions in time formation evaluating. Dwarf planet Ceres and massive asteroids (Pallas, Vesta, etc.) perturbations should be taken into account and dynamical evolution research for asteroid pairs in close orbits under passing through resonances is considered in future numerical simulations.

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Section: Introductionsupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

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Dynamical evolution of asteroid pairs on close orbits

Kuznetsov¹,

Glamazda²,

Kaiser³

et al. 2018

Proc. IAU

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“…Исследование этих пар [4] подтвердило их статистическую значимость. Были обнаружены пары астероидов, не принадлежащие группам или семействам [5][6][7]. Одна пара была обнаружена среди объектов рассеянного диска [8].…”

Section: Introductionunclassified

Pairs of Trans-Neptunian Objects with close orbits

Аль-Шиблави¹,

Kuznetsov²,

Al-Shiblawi³

et al. 2021

Астрономия И Исследование Космического Пространства: Всероссийская С Международным Участием Научная Конференция Студентов И Мол

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A search for pairs of dynamically correlated trans-Neptunian objects with semi-major axes of more than 30 au was performed. The Kholshevnikov metrics in the space of Keplerian orbits are used. Found 27 pairs with metrics less than 0.07 au1/2, 22 pairs in which one of the components is binary, for metrics less than 0.12 au1/2, and 11 pairs of binary trans-Neptunian objects with metrics less than 0.3 au1/2. It is concluded that the pair 2004 VA131 — 2004 VU131 may be the youngest pair of trans-Neptunian objects known today.

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“…1/2 . При выборе критериев использовались оценки максимальных значений метрики 5 для молодых семейств астероидов[6], которые были уменьшены в 3-5 раз для того, чтобы исключить ложноположительный результат при отборе. В результате было обнаружено 11 новых членов семейства Hobson: (537249) 2015 HM190, 2007 EH116, 2007 HC54, 2008 WV149, 2010 GN203, 2011 SU302, 2015 FV225, 2015 HV138, 2015 OP104, 2015 PM156, 2019 PS30.Моделирование динамической эволюции астероидов семейства Hobson проводилось численным методом с помощью программы Orbit9 комплекса OrbFit на интервале 1 млн лет.…”

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Investigation of the dynamic evolution of Hobson asteroid family

Vasileva¹,

Kuznetsov²

2021

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We have found 11 new members of the Hobson asteroids family: (537249) 2015 HM190, 2007 EH116, 2007 HC54, 2008 WV149, 2010 GN203, 2011 SU302, 2015 FV225, 2015 HV138, 2015 OP104, 2015 PM156, 2019 PS30. We estimated the Yarkovsky semimajor axis drift rate, the Hill sphere’s radii, and the escape velocity for all asteroids of the family. Simulation of the dynamic evolution of asteroids with allowance for the Yarkovsky effect has been carried out. Based on the simulation results, estimates of the asteroid pairs’ age included in the amily are obtained. The age of the Hobson asteroid family is about 400 kyr.

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Application of metrics in the space of orbits to search for asteroids on close orbits

Cited by 15 publications

References 17 publications

Dynamical evolution of asteroid pairs on close orbits

Dynamical evolution of asteroid pairs on close orbits

Pairs of Trans-Neptunian Objects with close orbits

Investigation of the dynamic evolution of Hobson asteroid family

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