The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance
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/10.1007/s10569-023-10125-8 http://hdl.handle.net/11449/247221 |
Resumo: | Aegaeon (S/2008 S 1) is the last satellite discovered by the Cassini spacecraft at the end of the 2000 s. Like the satellites Methone and Anthe, it is involved in mean motion resonance with the mid-sized Mimas. In this work, we give a detailed analysis of the current orbit of Aegaeon identifying the resonant, secular and long-term perturbations due to Mimas and the oblateness of Saturn, and the effects of Tethys. For this task, we perform thousands of numerical simulations of full equations of motion of ensembles of small bodies representing clones of Aegaeon. We have mapped the domain of the 7:6 Mimas-Aegaeon resonance in the phase space of the semi-major axis and eccentricity. It displays a large area dominated by regular motions associated with the 7:6 corotation resonance surrounded by chaotic layers. Aegaeon is currently located very close to the periodic orbit of the resonance, which extends up to eccentricities ∼ 0.025 centered at semi-major axis ∼ 168 , 028 km. We show that the current orbit of Aegaeon has an important forced component in eccentricity due to the 7:6 resonance. The orbital inclination of Aegaeon has a non-negligible forced value due to long-term perturbations of Mimas. These two forced modes explain the complex perturbed orbit of Aegaeon without requiring the co-existence of multiple resonances. |
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The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonanceAegaeonCelestial MechanicsDynamics of Natural SatellitesSaturnian systemAegaeon (S/2008 S 1) is the last satellite discovered by the Cassini spacecraft at the end of the 2000 s. Like the satellites Methone and Anthe, it is involved in mean motion resonance with the mid-sized Mimas. In this work, we give a detailed analysis of the current orbit of Aegaeon identifying the resonant, secular and long-term perturbations due to Mimas and the oblateness of Saturn, and the effects of Tethys. For this task, we perform thousands of numerical simulations of full equations of motion of ensembles of small bodies representing clones of Aegaeon. We have mapped the domain of the 7:6 Mimas-Aegaeon resonance in the phase space of the semi-major axis and eccentricity. It displays a large area dominated by regular motions associated with the 7:6 corotation resonance surrounded by chaotic layers. Aegaeon is currently located very close to the periodic orbit of the resonance, which extends up to eccentricities ∼ 0.025 centered at semi-major axis ∼ 168 , 028 km. We show that the current orbit of Aegaeon has an important forced component in eccentricity due to the 7:6 resonance. The orbital inclination of Aegaeon has a non-negligible forced value due to long-term perturbations of Mimas. These two forced modes explain the complex perturbed orbit of Aegaeon without requiring the co-existence of multiple resonances.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)São Paulo State University (Unesp) Institute of Geosciences and Exact Sciences (IGCE), Avenue 24-A, 1515, SPObservatório do Valongo Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antônio 43, RJSão Paulo State University (Unesp) Institute of Geosciences and Exact Sciences (IGCE), Avenue 24-A, 1515, SPFAPESP: 019/15162-2FAPESP: 2020/06807-7FAPERJ: 210.419/2022Universidade Estadual Paulista (UNESP)Universidade Federal do Rio de Janeiro (UFRJ)Callegari, Nelson [UNESP]Rodríguez, Adrián2023-07-29T13:10:01Z2023-07-29T13:10:01Z2023-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s10569-023-10125-8Celestial Mechanics and Dynamical Astronomy, v. 135, n. 2, 2023.1572-94780923-2958http://hdl.handle.net/11449/24722110.1007/s10569-023-10125-82-s2.0-85153290953Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCelestial Mechanics and Dynamical Astronomyinfo:eu-repo/semantics/openAccess2023-07-29T13:10:01Zoai:repositorio.unesp.br:11449/247221Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:41:23.193415Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
title |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
spellingShingle |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance Callegari, Nelson [UNESP] Aegaeon Celestial Mechanics Dynamics of Natural Satellites Saturnian system |
title_short |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
title_full |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
title_fullStr |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
title_full_unstemmed |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
title_sort |
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance |
author |
Callegari, Nelson [UNESP] |
author_facet |
Callegari, Nelson [UNESP] Rodríguez, Adrián |
author_role |
author |
author2 |
Rodríguez, Adrián |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal do Rio de Janeiro (UFRJ) |
dc.contributor.author.fl_str_mv |
Callegari, Nelson [UNESP] Rodríguez, Adrián |
dc.subject.por.fl_str_mv |
Aegaeon Celestial Mechanics Dynamics of Natural Satellites Saturnian system |
topic |
Aegaeon Celestial Mechanics Dynamics of Natural Satellites Saturnian system |
description |
Aegaeon (S/2008 S 1) is the last satellite discovered by the Cassini spacecraft at the end of the 2000 s. Like the satellites Methone and Anthe, it is involved in mean motion resonance with the mid-sized Mimas. In this work, we give a detailed analysis of the current orbit of Aegaeon identifying the resonant, secular and long-term perturbations due to Mimas and the oblateness of Saturn, and the effects of Tethys. For this task, we perform thousands of numerical simulations of full equations of motion of ensembles of small bodies representing clones of Aegaeon. We have mapped the domain of the 7:6 Mimas-Aegaeon resonance in the phase space of the semi-major axis and eccentricity. It displays a large area dominated by regular motions associated with the 7:6 corotation resonance surrounded by chaotic layers. Aegaeon is currently located very close to the periodic orbit of the resonance, which extends up to eccentricities ∼ 0.025 centered at semi-major axis ∼ 168 , 028 km. We show that the current orbit of Aegaeon has an important forced component in eccentricity due to the 7:6 resonance. The orbital inclination of Aegaeon has a non-negligible forced value due to long-term perturbations of Mimas. These two forced modes explain the complex perturbed orbit of Aegaeon without requiring the co-existence of multiple resonances. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:10:01Z 2023-07-29T13:10:01Z 2023-04-01 |
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/10.1007/s10569-023-10125-8 Celestial Mechanics and Dynamical Astronomy, v. 135, n. 2, 2023. 1572-9478 0923-2958 http://hdl.handle.net/11449/247221 10.1007/s10569-023-10125-8 2-s2.0-85153290953 |
url |
http://dx.doi.org/10.1007/s10569-023-10125-8 http://hdl.handle.net/11449/247221 |
identifier_str_mv |
Celestial Mechanics and Dynamical Astronomy, v. 135, n. 2, 2023. 1572-9478 0923-2958 10.1007/s10569-023-10125-8 2-s2.0-85153290953 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Celestial Mechanics and Dynamical Astronomy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
|
_version_ |
1808129543846756352 |