Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations

Autores
Margoti, G.; Braga Ribas, F.; Ortiz, J. L.; Sicardy, B.; Desmars, J.; Morgado, B. E.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Since the discovery of (15760) 1992 QB1 [6], the number of trans-Neptunian objects (TNOs) identi ed has grown signi cantly. By February 2024, more than 4800 TNOs were known, with only about 210 of them with measured diameters. With the new data from the Legacy Survey of Space and Time (LSST), this number will grow signi cantly, deepening our understanding of the origin and evolution of the Solar System [1]. However, due to their distance, knowledge about their sizes, shapes, albedos, densities, and atmospheres remains sparse [2]. Stellar occultations allow for precise determinations of these parameters. A stellar occultation occurs when a Solar System object passes in front of a star, casting a shadow on Earth. This shadow re ects the object's projection at the moment of occultation [5]. Quaoar, a TNO with a semi-major axis of 43 au and an inclination of 8 degrees is classi ed as a hot classical TNO [4]. It has a satellite, Weywot, and two rings beyond the Roche limit [8]. These rings suggest alternative mechanisms for their formation and stability [7].
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Stellar occultations
Solar System
Quaoar
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/192180
Acceder
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network_name_str SEDICI (UNLP)
spelling Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultationsMargoti, G.Braga Ribas, F.Ortiz, J. L.Sicardy, B.Desmars, J.Morgado, B. E.Ciencias AstronómicasStellar occultationsSolar SystemQuaoarSince the discovery of (15760) 1992 QB1 [6], the number of trans-Neptunian objects (TNOs) identi ed has grown signi cantly. By February 2024, more than 4800 TNOs were known, with only about 210 of them with measured diameters. With the new data from the Legacy Survey of Space and Time (LSST), this number will grow signi cantly, deepening our understanding of the origin and evolution of the Solar System [1]. However, due to their distance, knowledge about their sizes, shapes, albedos, densities, and atmospheres remains sparse [2]. Stellar occultations allow for precise determinations of these parameters. A stellar occultation occurs when a Solar System object passes in front of a star, casting a shadow on Earth. This shadow re ects the object's projection at the moment of occultation [5]. Quaoar, a TNO with a semi-major axis of 43 au and an inclination of 8 degrees is classi ed as a hot classical TNO [4]. It has a satellite, Weywot, and two rings beyond the Roche limit [8]. These rings suggest alternative mechanisms for their formation and stability [7].Facultad de Ciencias Astronómicas y Geofísicas2025-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/192180enginfo:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-03-26T09:21:46Zoai:sedici.unlp.edu.ar:10915/192180Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-03-26 09:21:47.129SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
title Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
spellingShingle Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
Margoti, G.
Ciencias Astronómicas
Stellar occultations
Solar System
Quaoar
title_short Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
title_full Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
title_fullStr Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
title_full_unstemmed Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
title_sort Three-dimensional shape of (50000) Quaoar and orbit refinement using data from 29 stellar occultations
dc.creator.none.fl_str_mv Margoti, G.
Braga Ribas, F.
Ortiz, J. L.
Sicardy, B.
Desmars, J.
Morgado, B. E.
author Margoti, G.
author_facet Margoti, G.
Braga Ribas, F.
Ortiz, J. L.
Sicardy, B.
Desmars, J.
Morgado, B. E.
author_role author
author2 Braga Ribas, F.
Ortiz, J. L.
Sicardy, B.
Desmars, J.
Morgado, B. E.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Stellar occultations
Solar System
Quaoar
topic Ciencias Astronómicas
Stellar occultations
Solar System
Quaoar
dc.description.none.fl_txt_mv Since the discovery of (15760) 1992 QB1 [6], the number of trans-Neptunian objects (TNOs) identi ed has grown signi cantly. By February 2024, more than 4800 TNOs were known, with only about 210 of them with measured diameters. With the new data from the Legacy Survey of Space and Time (LSST), this number will grow signi cantly, deepening our understanding of the origin and evolution of the Solar System [1]. However, due to their distance, knowledge about their sizes, shapes, albedos, densities, and atmospheres remains sparse [2]. Stellar occultations allow for precise determinations of these parameters. A stellar occultation occurs when a Solar System object passes in front of a star, casting a shadow on Earth. This shadow re ects the object's projection at the moment of occultation [5]. Quaoar, a TNO with a semi-major axis of 43 au and an inclination of 8 degrees is classi ed as a hot classical TNO [4]. It has a satellite, Weywot, and two rings beyond the Roche limit [8]. These rings suggest alternative mechanisms for their formation and stability [7].
Facultad de Ciencias Astronómicas y Geofísicas
description Since the discovery of (15760) 1992 QB1 [6], the number of trans-Neptunian objects (TNOs) identi ed has grown signi cantly. By February 2024, more than 4800 TNOs were known, with only about 210 of them with measured diameters. With the new data from the Legacy Survey of Space and Time (LSST), this number will grow signi cantly, deepening our understanding of the origin and evolution of the Solar System [1]. However, due to their distance, knowledge about their sizes, shapes, albedos, densities, and atmospheres remains sparse [2]. Stellar occultations allow for precise determinations of these parameters. A stellar occultation occurs when a Solar System object passes in front of a star, casting a shadow on Earth. This shadow re ects the object's projection at the moment of occultation [5]. Quaoar, a TNO with a semi-major axis of 43 au and an inclination of 8 degrees is classi ed as a hot classical TNO [4]. It has a satellite, Weywot, and two rings beyond the Roche limit [8]. These rings suggest alternative mechanisms for their formation and stability [7].
publishDate 2025
dc.date.none.fl_str_mv 2025-08
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Resumen
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/192180
url http://sedici.unlp.edu.ar/handle/10915/192180
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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