(130) Elektra Delta - on the stability of the new third moonlet

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dc.contributor.authorValvano, G. [UNESP]
dc.contributor.authorOliveira, R. Machado [UNESP]
dc.contributor.authorWinter, O. C. [UNESP]
dc.contributor.authorSfair, R. [UNESP]
dc.contributor.authorBorderes-Motta, G.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionEberhard Karls Universität Tübingen
dc.contributor.institutionUniversidad Carlos III de Madrid
dc.contributor.institutionKiruna
dc.date.accessioned2023-07-29T16:16:25Z
dc.date.available2023-07-29T16:16:25Z
dc.date.issued2023-07-01
dc.description.abstractThe 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.en
dc.description.affiliationGrupo de Dinâmica Orbital e Planetologia São Paulo State University UNESP, Guaratinguetá
dc.description.affiliationInstitut für Astronomie und Astrophysik Eberhard Karls Universität Tübingen
dc.description.affiliationBioengineering and Aerospace Engineering Department Universidad Carlos III de Madrid, Leganés
dc.description.affiliationSwedish Institute of Space Physics IRF Kiruna
dc.description.affiliationUnespGrupo de Dinâmica Orbital e Planetologia São Paulo State University UNESP, Guaratinguetá
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipEcumenical Project for International Cooperation
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipDeutsche Stiftung für Herzforschung
dc.description.sponsorshipIdFAPESP: 2016/24561-0
dc.description.sponsorshipIdFAPESP: 2019/23963-5
dc.description.sponsorshipIdFAPESP: 2022/01678-0
dc.description.sponsorshipIdCNPq: 305210/2018-1
dc.description.sponsorshipIdDeutsche Stiftung für Herzforschung: 446102036
dc.description.sponsorshipIdCAPES: 88887.310463/2018-00
dc.format.extent6196-6202
dc.identifierhttp://dx.doi.org/10.1093/mnras/stad1322
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, v. 522, n. 4, p. 6196-6202, 2023.
dc.identifier.doi10.1093/mnras/stad1322
dc.identifier.issn1365-2966
dc.identifier.issn0035-8711
dc.identifier.scopus2-s2.0-85161535782
dc.identifier.urihttp://hdl.handle.net/11449/250049
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.sourceScopus
dc.subjectasteroids: general
dc.subjectcelestial mechanics
dc.subjectminor planets
dc.subjectplanets and satellites: dynamical evolution and stability
dc.title(130) Elektra Delta - on the stability of the new third moonleten
dc.typeArtigo
unesp.author.orcid0000-0002-7905-1788[1]
unesp.author.orcid0000-0002-6875-0508[2]
unesp.author.orcid0000-0002-4901-3289[3]
unesp.author.orcid0000-0002-4939-013X[4]
unesp.author.orcid0000-0002-4680-8414[5]
unesp.departmentMatemática - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências