(130) Elektra Delta - on the stability of the new third moonlet
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1093/mnras/stad1322 http://hdl.handle.net/11449/250049 |
Resumo: | The aim of this work is to verify the stability of the proposed orbital solutions for the third moonlet (Delta) taking into account a realistic gravitational potential for the central body of the quadruple system (Alpha). We also aim to estimate the location and size of a stability region inside the orbit of Gamma. First, we created a set of test particles with intervals of semimajor axis, eccentricities, and inclinations that covers the region interior to the orbit of Gamma, including the proposed orbit of Delta and a wide region around it. We considered three different models for the gravitational potential of Alpha: irregular polyhedron, ellipsoidal body, and oblate body. For a second scenario, Delta was considered a massive spherical body and Alpha an irregular polyhedron. Beta and Gamma were assumed as spherical massive bodies in both scenarios. The simulations showed that a large region of space is almost fully stable only when Alpha was modelled simply as an oblate body. For the scenario with Delta as a massive body, the results did not change from those as mass-less particles. Beta and Gamma do not play any relevant role in the dynamics of particles interior to the orbit of Gamma. Delta's predicted orbital elements are fully unstable and far from the nearest stable region. The primary instability source is Alpha's elongated shape. Therefore, in the determination of the orbital elements of Delta, it must be taken into account the gravitational potential of Alpha assuming, at least, an ellipsoidal shape. |
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(130) Elektra Delta - on the stability of the new third moonletasteroids: generalcelestial mechanicsminor planetsplanets and satellites: dynamical evolution and stabilityThe aim of this work is to verify the stability of the proposed orbital solutions for the third moonlet (Delta) taking into account a realistic gravitational potential for the central body of the quadruple system (Alpha). We also aim to estimate the location and size of a stability region inside the orbit of Gamma. First, we created a set of test particles with intervals of semimajor axis, eccentricities, and inclinations that covers the region interior to the orbit of Gamma, including the proposed orbit of Delta and a wide region around it. We considered three different models for the gravitational potential of Alpha: irregular polyhedron, ellipsoidal body, and oblate body. For a second scenario, Delta was considered a massive spherical body and Alpha an irregular polyhedron. Beta and Gamma were assumed as spherical massive bodies in both scenarios. The simulations showed that a large region of space is almost fully stable only when Alpha was modelled simply as an oblate body. For the scenario with Delta as a massive body, the results did not change from those as mass-less particles. Beta and Gamma do not play any relevant role in the dynamics of particles interior to the orbit of Gamma. Delta's predicted orbital elements are fully unstable and far from the nearest stable region. The primary instability source is Alpha's elongated shape. Therefore, in the determination of the orbital elements of Delta, it must be taken into account the gravitational potential of Alpha assuming, at least, an ellipsoidal shape.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Ecumenical Project for International CooperationFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Deutsche Stiftung für HerzforschungGrupo de Dinâmica Orbital e Planetologia São Paulo State University UNESP, GuaratinguetáInstitut für Astronomie und Astrophysik Eberhard Karls Universität TübingenBioengineering and Aerospace Engineering Department Universidad Carlos III de Madrid, LeganésSwedish Institute of Space Physics IRF KirunaGrupo de Dinâmica Orbital e Planetologia São Paulo State University UNESP, GuaratinguetáFAPESP: 2016/24561-0FAPESP: 2019/23963-5FAPESP: 2022/01678-0CNPq: 305210/2018-1Deutsche Stiftung für Herzforschung: 446102036CAPES: 88887.310463/2018-00Universidade Estadual Paulista (UNESP)Eberhard Karls Universität TübingenUniversidad Carlos III de MadridKirunaValvano, G. [UNESP]Oliveira, R. Machado [UNESP]Winter, O. C. [UNESP]Sfair, R. [UNESP]Borderes-Motta, G.2023-07-29T16:16:25Z2023-07-29T16:16:25Z2023-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article6196-6202http://dx.doi.org/10.1093/mnras/stad1322Monthly Notices of the Royal Astronomical Society, v. 522, n. 4, p. 6196-6202, 2023.1365-29660035-8711http://hdl.handle.net/11449/25004910.1093/mnras/stad13222-s2.0-85161535782Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices of the Royal Astronomical Societyinfo:eu-repo/semantics/openAccess2024-07-02T14:28:55Zoai:repositorio.unesp.br:11449/250049Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:29:16.114256Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
(130) Elektra Delta - on the stability of the new third moonlet |
title |
(130) Elektra Delta - on the stability of the new third moonlet |
spellingShingle |
(130) Elektra Delta - on the stability of the new third moonlet Valvano, G. [UNESP] asteroids: general celestial mechanics minor planets planets and satellites: dynamical evolution and stability |
title_short |
(130) Elektra Delta - on the stability of the new third moonlet |
title_full |
(130) Elektra Delta - on the stability of the new third moonlet |
title_fullStr |
(130) Elektra Delta - on the stability of the new third moonlet |
title_full_unstemmed |
(130) Elektra Delta - on the stability of the new third moonlet |
title_sort |
(130) Elektra Delta - on the stability of the new third moonlet |
author |
Valvano, G. [UNESP] |
author_facet |
Valvano, G. [UNESP] Oliveira, R. Machado [UNESP] Winter, O. C. [UNESP] Sfair, R. [UNESP] Borderes-Motta, G. |
author_role |
author |
author2 |
Oliveira, R. Machado [UNESP] Winter, O. C. [UNESP] Sfair, R. [UNESP] Borderes-Motta, G. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Eberhard Karls Universität Tübingen Universidad Carlos III de Madrid Kiruna |
dc.contributor.author.fl_str_mv |
Valvano, G. [UNESP] Oliveira, R. Machado [UNESP] Winter, O. C. [UNESP] Sfair, R. [UNESP] Borderes-Motta, G. |
dc.subject.por.fl_str_mv |
asteroids: general celestial mechanics minor planets planets and satellites: dynamical evolution and stability |
topic |
asteroids: general celestial mechanics minor planets planets and satellites: dynamical evolution and stability |
description |
The aim of this work is to verify the stability of the proposed orbital solutions for the third moonlet (Delta) taking into account a realistic gravitational potential for the central body of the quadruple system (Alpha). We also aim to estimate the location and size of a stability region inside the orbit of Gamma. First, we created a set of test particles with intervals of semimajor axis, eccentricities, and inclinations that covers the region interior to the orbit of Gamma, including the proposed orbit of Delta and a wide region around it. We considered three different models for the gravitational potential of Alpha: irregular polyhedron, ellipsoidal body, and oblate body. For a second scenario, Delta was considered a massive spherical body and Alpha an irregular polyhedron. Beta and Gamma were assumed as spherical massive bodies in both scenarios. The simulations showed that a large region of space is almost fully stable only when Alpha was modelled simply as an oblate body. For the scenario with Delta as a massive body, the results did not change from those as mass-less particles. Beta and Gamma do not play any relevant role in the dynamics of particles interior to the orbit of Gamma. Delta's predicted orbital elements are fully unstable and far from the nearest stable region. The primary instability source is Alpha's elongated shape. Therefore, in the determination of the orbital elements of Delta, it must be taken into account the gravitational potential of Alpha assuming, at least, an ellipsoidal shape. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T16:16:25Z 2023-07-29T16:16:25Z 2023-07-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1093/mnras/stad1322 Monthly Notices of the Royal Astronomical Society, v. 522, n. 4, p. 6196-6202, 2023. 1365-2966 0035-8711 http://hdl.handle.net/11449/250049 10.1093/mnras/stad1322 2-s2.0-85161535782 |
url |
http://dx.doi.org/10.1093/mnras/stad1322 http://hdl.handle.net/11449/250049 |
identifier_str_mv |
Monthly Notices of the Royal Astronomical Society, v. 522, n. 4, p. 6196-6202, 2023. 1365-2966 0035-8711 10.1093/mnras/stad1322 2-s2.0-85161535782 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Monthly Notices of the Royal Astronomical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
6196-6202 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128659139067904 |