A particle-linkage model for elongated asteroids with three-dimensional mass distribution

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorINPE-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSantos, L. B. T.-
Autor(es): dc.creatorMarchi, L. O.-
Autor(es): dc.creatorAljbaae, S.-
Autor(es): dc.creatorSousa-Silva, P. A. [UNESP]-
Autor(es): dc.creatorSanchez, D. M.-
Autor(es): dc.creatorPrado, A. F. B. A.-
Data de aceite: dc.date.accessioned2022-02-22T00:56:12Z-
Data de disponibilização: dc.date.available2022-02-22T00:56:12Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/mnras/stab198-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209383-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209383-
Descrição: dc.descriptionThe goal of this paper is to develop a simplified model to describe the gravitational fields of elongated asteroids. The proposed model consists of representing an elongated asteroid using a triple-particle-linkage system distributed in the three-dimensional space and it is an extension of previous planar models. A nonlinear optimization method is used to determine the parameters of our model, minimizing the errors of all the external equilibrium points with respect to the solutions calculated with a more realistic approach, the Mascon model, which are assumed to give the real values of the system. The model considered in this paper is then applied to three real irregular asteroids: 1620 Geographos, 433 Eros, and 243 Ida. The results show that the current triple-particle-linkage three-dimensional model gives better accuracy when compared to the axisymmetric triple-particle-linkage model available in the literature, and provides an advantage in terms of accuracy over the mass point model, while keeping computational time low. This model is also used to carry out simulations to characterize regions with solutions that remain bounded or that escape from around each asteroid under analysis. We investigated initial inclinations of 0 degrees (direct orbits) and 180 degrees (retrograde orbits). We considered the gravitational field of the asteroid, the gravitational attraction of the Sun, and the SRP. Our results are then compared to the results obtained using the Mascon gravitational model, based on the polyhedral shape source. We found good agreement between the two models.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionNational Institute for Space Research (INPE)-
Descrição: dc.descriptionINPE, Natl Inst Space Res, Div Space Mech & Control, Sao Paulo, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Sao Joao Da Boa Vista, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Sao Joao Da Boa Vista, Brazil-
Descrição: dc.descriptionCNPq: 140501/2017-7-
Descrição: dc.descriptionCNPq: 150678/2019-3-
Descrição: dc.descriptionCNPq: 422282/2018-9-
Descrição: dc.descriptionCNPq: 301338/2016-7-
Descrição: dc.descriptionFAPESP: 2016/24561-0-
Descrição: dc.descriptionFAPESP: 2016/18418-0-
Descrição: dc.descriptionCAPES: 88887.374148/2019-00-
Formato: dc.format4277-4289-
Idioma: dc.languageen-
Publicador: dc.publisherOxford Univ Press-
Relação: dc.relationMonthly Notices Of The Royal Astronomical Society-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectgravitation-
Palavras-chave: dc.subjectcelestial mechanics-
Palavras-chave: dc.subjectminor planets-
Palavras-chave: dc.subjectasteroids: individual: 1620 Geographos-
Palavras-chave: dc.subject243 Ida-
Palavras-chave: dc.subject433 Eros-
Título: dc.titleA particle-linkage model for elongated asteroids with three-dimensional mass distribution-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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