A particle-linkage model for elongated asteroids with three-dimensional mass distribution
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1093/mnras/stab198 http://hdl.handle.net/11449/209383 |
Resumo: | The 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. |
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spelling |
A particle-linkage model for elongated asteroids with three-dimensional mass distributiongravitationcelestial mechanicsminor planetsasteroids: individual: 1620 Geographos243 Ida433 ErosThe 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.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)National Institute for Space Research (INPE)INPE, Natl Inst Space Res, Div Space Mech & Control, Sao Paulo, BrazilSao Paulo State Univ, UNESP, Sao Joao Da Boa Vista, BrazilSao Paulo State Univ, UNESP, Sao Joao Da Boa Vista, BrazilCNPq: 140501/2017-7CNPq: 150678/2019-3CNPq: 422282/2018-9CNPq: 301338/2016-7FAPESP: 2016/24561-0FAPESP: 2016/18418-0CAPES: 88887.374148/2019-00Oxford Univ PressINPEUniversidade Estadual Paulista (Unesp)Santos, L. B. T.Marchi, L. O.Aljbaae, S.Sousa-Silva, P. A. [UNESP]Sanchez, D. M.Prado, A. F. B. A.2021-06-25T11:58:08Z2021-06-25T11:58:08Z2021-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4277-4289http://dx.doi.org/10.1093/mnras/stab198Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 502, n. 3, p. 4277-4289, 2021.0035-8711http://hdl.handle.net/11449/20938310.1093/mnras/stab198WOS:000648998800081Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices Of The Royal Astronomical Societyinfo:eu-repo/semantics/openAccess2021-10-23T19:28:06Zoai:repositorio.unesp.br:11449/209383Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:28:06Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
title |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
spellingShingle |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution Santos, L. B. T. gravitation celestial mechanics minor planets asteroids: individual: 1620 Geographos 243 Ida 433 Eros |
title_short |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
title_full |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
title_fullStr |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
title_full_unstemmed |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
title_sort |
A particle-linkage model for elongated asteroids with three-dimensional mass distribution |
author |
Santos, L. B. T. |
author_facet |
Santos, L. B. T. Marchi, L. O. Aljbaae, S. Sousa-Silva, P. A. [UNESP] Sanchez, D. M. Prado, A. F. B. A. |
author_role |
author |
author2 |
Marchi, L. O. Aljbaae, S. Sousa-Silva, P. A. [UNESP] Sanchez, D. M. Prado, A. F. B. A. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
INPE Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Santos, L. B. T. Marchi, L. O. Aljbaae, S. Sousa-Silva, P. A. [UNESP] Sanchez, D. M. Prado, A. F. B. A. |
dc.subject.por.fl_str_mv |
gravitation celestial mechanics minor planets asteroids: individual: 1620 Geographos 243 Ida 433 Eros |
topic |
gravitation celestial mechanics minor planets asteroids: individual: 1620 Geographos 243 Ida 433 Eros |
description |
The 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. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:58:08Z 2021-06-25T11:58:08Z 2021-04-01 |
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/stab198 Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 502, n. 3, p. 4277-4289, 2021. 0035-8711 http://hdl.handle.net/11449/209383 10.1093/mnras/stab198 WOS:000648998800081 |
url |
http://dx.doi.org/10.1093/mnras/stab198 http://hdl.handle.net/11449/209383 |
identifier_str_mv |
Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 502, n. 3, p. 4277-4289, 2021. 0035-8711 10.1093/mnras/stab198 WOS:000648998800081 |
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 |
4277-4289 |
dc.publisher.none.fl_str_mv |
Oxford Univ Press |
publisher.none.fl_str_mv |
Oxford Univ Press |
dc.source.none.fl_str_mv |
Web of Science 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 |
|
_version_ |
1799965490630623232 |