Analysis of the Karma asteroid family
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/staa3676 http://hdl.handle.net/11449/208370 |
Resumo: | The Karma asteroid family is a group of primitive asteroids in the middle part of the main belt, just at the outer edge of the 3J:1A mean-motion resonance. We obtained the list of the family members with 317 asteroids, and estimated that it was formed by the catastrophic disruption of a parent body that was between 34 and 41 km in diameter. Based on the V-shape method, age of the Karma family is estimated to be about 137 Myr. A detailed dynamical map of the region combined with numerical simulations allowed us to reconstruct the long-term dynamical evolution of the family, and to identify the mechanisms responsible for this evolution. The numerical simulations successfully reproduced the main features in the orbital distribution of the family members but also showed that some regions of the Karma family could be missing. A more detailed analysis revealed that these regions likely consist of very dark objects, fainter than absolute magnitude H = 17, that have not yet been detected. Based on the obtained results, we concluded that magnitude-frequency distribution of family members up to H = 16 mag is neither affected by dynamical erosion nor observational incompleteness, and therefore represents the result of collisional grinding of the original family population. Finally, we found that the Karma family have been supplying some asteroids to the near-Earth region via the 3J:1A resonance. Currently, there should about 10 family members larger than 1 km in diameter, orbiting in the near-Earth space. |
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Analysis of the Karma asteroid familycelestial mechanicsmethods: Numericminor planets, asteroids: GeneralThe Karma asteroid family is a group of primitive asteroids in the middle part of the main belt, just at the outer edge of the 3J:1A mean-motion resonance. We obtained the list of the family members with 317 asteroids, and estimated that it was formed by the catastrophic disruption of a parent body that was between 34 and 41 km in diameter. Based on the V-shape method, age of the Karma family is estimated to be about 137 Myr. A detailed dynamical map of the region combined with numerical simulations allowed us to reconstruct the long-term dynamical evolution of the family, and to identify the mechanisms responsible for this evolution. The numerical simulations successfully reproduced the main features in the orbital distribution of the family members but also showed that some regions of the Karma family could be missing. A more detailed analysis revealed that these regions likely consist of very dark objects, fainter than absolute magnitude H = 17, that have not yet been detected. Based on the obtained results, we concluded that magnitude-frequency distribution of family members up to H = 16 mag is neither affected by dynamical erosion nor observational incompleteness, and therefore represents the result of collisional grinding of the original family population. Finally, we found that the Karma family have been supplying some asteroids to the near-Earth region via the 3J:1A resonance. Currently, there should about 10 family members larger than 1 km in diameter, orbiting in the near-Earth space.Department of Astronomy Faculty of Mathematics University of Belgrade, Studentski trg 16Sao Paulo State University (UNESP) School of Natural Sciences and EngineeringSao Paulo State University (UNESP) School of Natural Sciences and EngineeringUniversity of BelgradeUniversidade Estadual Paulista (Unesp)Pavela, DeboraNovaković, BojanCarruba, Valerio [UNESP]Radović, Viktor2021-06-25T11:11:03Z2021-06-25T11:11:03Z2021-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article356-366http://dx.doi.org/10.1093/mnras/staa3676Monthly Notices of the Royal Astronomical Society, v. 501, n. 1, p. 356-366, 2021.1365-29660035-8711http://hdl.handle.net/11449/20837010.1093/mnras/staa36762-s2.0-85100349976Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices of the Royal Astronomical Societyinfo:eu-repo/semantics/openAccess2024-07-02T14:28:57Zoai:repositorio.unesp.br:11449/208370Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:26:58.916116Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Analysis of the Karma asteroid family |
title |
Analysis of the Karma asteroid family |
spellingShingle |
Analysis of the Karma asteroid family Pavela, Debora celestial mechanics methods: Numeric minor planets, asteroids: General |
title_short |
Analysis of the Karma asteroid family |
title_full |
Analysis of the Karma asteroid family |
title_fullStr |
Analysis of the Karma asteroid family |
title_full_unstemmed |
Analysis of the Karma asteroid family |
title_sort |
Analysis of the Karma asteroid family |
author |
Pavela, Debora |
author_facet |
Pavela, Debora Novaković, Bojan Carruba, Valerio [UNESP] Radović, Viktor |
author_role |
author |
author2 |
Novaković, Bojan Carruba, Valerio [UNESP] Radović, Viktor |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
University of Belgrade Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pavela, Debora Novaković, Bojan Carruba, Valerio [UNESP] Radović, Viktor |
dc.subject.por.fl_str_mv |
celestial mechanics methods: Numeric minor planets, asteroids: General |
topic |
celestial mechanics methods: Numeric minor planets, asteroids: General |
description |
The Karma asteroid family is a group of primitive asteroids in the middle part of the main belt, just at the outer edge of the 3J:1A mean-motion resonance. We obtained the list of the family members with 317 asteroids, and estimated that it was formed by the catastrophic disruption of a parent body that was between 34 and 41 km in diameter. Based on the V-shape method, age of the Karma family is estimated to be about 137 Myr. A detailed dynamical map of the region combined with numerical simulations allowed us to reconstruct the long-term dynamical evolution of the family, and to identify the mechanisms responsible for this evolution. The numerical simulations successfully reproduced the main features in the orbital distribution of the family members but also showed that some regions of the Karma family could be missing. A more detailed analysis revealed that these regions likely consist of very dark objects, fainter than absolute magnitude H = 17, that have not yet been detected. Based on the obtained results, we concluded that magnitude-frequency distribution of family members up to H = 16 mag is neither affected by dynamical erosion nor observational incompleteness, and therefore represents the result of collisional grinding of the original family population. Finally, we found that the Karma family have been supplying some asteroids to the near-Earth region via the 3J:1A resonance. Currently, there should about 10 family members larger than 1 km in diameter, orbiting in the near-Earth space. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:11:03Z 2021-06-25T11:11:03Z 2021-02-01 |
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/staa3676 Monthly Notices of the Royal Astronomical Society, v. 501, n. 1, p. 356-366, 2021. 1365-2966 0035-8711 http://hdl.handle.net/11449/208370 10.1093/mnras/staa3676 2-s2.0-85100349976 |
url |
http://dx.doi.org/10.1093/mnras/staa3676 http://hdl.handle.net/11449/208370 |
identifier_str_mv |
Monthly Notices of the Royal Astronomical Society, v. 501, n. 1, p. 356-366, 2021. 1365-2966 0035-8711 10.1093/mnras/staa3676 2-s2.0-85100349976 |
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 |
356-366 |
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_ |
1808128814075609088 |