The multichord stellar occultation on 2019 October 22 by the trans-Neptunian object (84922) 2003 VS2

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorConsejo Superior De Investigaciones Científicas-
Autor(es): dc.contributorCnrs-
Autor(es): dc.contributorBairro Imperial De São Cristóvão (RJ)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorAstronomical Institute Of The Romanian Academy-
Autor(es): dc.contributorInstituto De Astrofísica De Canarias (IAC)-
Autor(es): dc.contributorObservatório Nacional/MCTI-
Autor(es): dc.contributorPartnership 1 Building-
Autor(es): dc.contributorUniversity Of Namur-
Autor(es): dc.contributorUniversity Of Belgrade-
Autor(es): dc.contributorUniversität Hamburg-
Autor(es): dc.contributorAstronomical Observatory-
Autor(es): dc.contributorBulgarian Academy Of Sciences-
Autor(es): dc.contributorROASTERR-1 Observatory-
Autor(es): dc.contributorStardust Observatory-
Autor(es): dc.contributorAstroclubul Bucuresti-
Autor(es): dc.contributorStardreams Observatory-
Autor(es): dc.contributorAstronomical Observatory Cluj-
Autor(es): dc.contributorUniversity Of Craiova-
Autor(es): dc.contributorInstitutul De Stiinte Spatiale (ISS)-
Autor(es): dc.contributorSocietatea Romana Pentru Astronomie Culturala (SRPAC)-
Autor(es): dc.contributorFederal University Of Technology - Paraná (UTFPR/DAFIS)-
Autor(es): dc.contributorInstitut Polytechnique Des Sciences Avancées Ipsa-
Autor(es): dc.contributorUniv. Lille-
Autor(es): dc.contributorUniversidade Federal do Rio de Janeiro (UFRJ)-
Autor(es): dc.contributorAstronomical Institute Of The Slovak Academy Of Sciences-
Autor(es): dc.contributorResearch Centre For Astronomy And Earth Sciences-
Autor(es): dc.contributorOsservatorio Astrofísico Di Catania (OACt-INAF)-
Autor(es): dc.contributorGothard Astrophysical Observatory-
Autor(es): dc.contributorMTA-ELTE Exoplanet Research Group-
Autor(es): dc.contributorPedagogical University Of Cracow Limanowa County-
Autor(es): dc.contributorSanta Cruz De La Palma-
Autor(es): dc.contributorOsservatorio Astronomico Di Monte Agliale-
Autor(es): dc.contributorPDlink Observatory-
Autor(es): dc.contributorInaf - Osservatorio Astronomico Di Trieste-
Autor(es): dc.contributorEaon-
Autor(es): dc.contributorInternational Occultation Timing Association - European Section (IOTA/ES)-
Autor(es): dc.contributorIa Cu Stele-
Autor(es): dc.contributorCrni Vrh Observatory-
Autor(es): dc.contributorUniversity Of Ljubljana-
Autor(es): dc.contributorDark Sky Slovenia-
Autor(es): dc.creatorVara-Lubiano, M.-
Autor(es): dc.creatorBenedetti-Rossi, G.-
Autor(es): dc.creatorSantos-Sanz, P.-
Autor(es): dc.creatorOrtiz, J. L.-
Autor(es): dc.creatorSicardy, B.-
Autor(es): dc.creatorPopescu, M.-
Autor(es): dc.creatorMorales, N.-
Autor(es): dc.creatorRommel, F. L.-
Autor(es): dc.creatorMorgado, B.-
Autor(es): dc.creatorPereira, C. L.-
Autor(es): dc.creatorÁlvarez-Candal, A.-
Autor(es): dc.creatorFernández-Valenzuela, E.-
Autor(es): dc.creatorSouami, D.-
Autor(es): dc.creatorIlic, D.-
Autor(es): dc.creatorVince, O.-
Autor(es): dc.creatorBachev, R.-
Autor(es): dc.creatorSemkov, E.-
Autor(es): dc.creatorNedelcu, D. A.-
Autor(es): dc.creatorSonka, A.-
Autor(es): dc.creatorHudin, L.-
Autor(es): dc.creatorBoaca, M.-
Autor(es): dc.creatorInceu, V.-
Autor(es): dc.creatorCurelaru, L.-
Autor(es): dc.creatorGherase, R.-
Autor(es): dc.creatorTurcu, V.-
Autor(es): dc.creatorMoldovan, D.-
Autor(es): dc.creatorMircea, L.-
Autor(es): dc.creatorPredatu, M.-
Autor(es): dc.creatorTeodorescu, M.-
Autor(es): dc.creatorStoian, L.-
Autor(es): dc.creatorJuravle, A.-
Autor(es): dc.creatorBraga-Ribas, F.-
Autor(es): dc.creatorDesmars, J.-
Autor(es): dc.creatorDuffard, R.-
Autor(es): dc.creatorLecacheux, J.-
Autor(es): dc.creatorCamargo, J. I.B.-
Autor(es): dc.creatorAssafin, M.-
Autor(es): dc.creatorVieira-Martins, R.-
Autor(es): dc.creatorPribulla, T.-
Autor(es): dc.creatorHusárik, M.-
Autor(es): dc.creatorSivanič, P.-
Autor(es): dc.creatorPal, A.-
Autor(es): dc.creatorSzakats, R.-
Autor(es): dc.creatorKiss, C.-
Autor(es): dc.creatorAlonso-Santiago, J.-
Autor(es): dc.creatorFrasca, A.-
Autor(es): dc.creatorSzabó, G. M.-
Autor(es): dc.creatorDerekas, A.-
Autor(es): dc.creatorSzigeti, L.-
Autor(es): dc.creatorDrozdz, M.-
Autor(es): dc.creatorOgloza, W.-
Autor(es): dc.creatorSkvarč, J.-
Autor(es): dc.creatorCiabattari, F.-
Autor(es): dc.creatorDelincak, P.-
Autor(es): dc.creatorDi Marcantonio, P.-
Autor(es): dc.creatorIafrate, G.-
Autor(es): dc.creatorCoretti, I.-
Autor(es): dc.creatorBaldini, V.-
Autor(es): dc.creatorBaruffetti, P.-
Autor(es): dc.creatorKlös, O.-
Autor(es): dc.creatorDumitrescu, V.-
Autor(es): dc.creatorMikuž, H.-
Autor(es): dc.creatorMohar, A.-
Data de aceite: dc.date.accessioned2025-08-21T18:34:29Z-
Data de disponibilização: dc.date.available2025-08-21T18:34:29Z-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2022-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1051/0004-6361/202141842-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/240560-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/240560-
Descrição: dc.descriptionContext. Stellar occultations have become one of the best techniques to gather information about the physical properties of trans-Neptunian objects (TNOs), which are critical objects for understanding the origin and evolution of our Solar System. Aims. The purpose of this work is to determine, with better accuracy, the physical characteristics of the TNO (84922) 2003 VS2 through the analysis of the multichord stellar occultation on 2019 October 22 and photometric data collected afterward. Methods. We predicted, observed, and analyzed the multichord stellar occultation of the Second Gaia Data Release (Gaia DR2) source 3449076721168026624 (mÏ = 14.1 mag) by the plutino object 2003 VS2 on 2019 October 22. We performed aperture photometry on the images collected and derived the times when the star disappeared and reappeared from the observing sites that reported a positive detection. We fit the extremities of such positive chords to an ellipse using a Monte Carlo method. We also carried out photometric observations to derive the rotational light curve amplitude and rotational phase of 2003 VS2 during the stellar occultation. Combining the results and assuming a triaxial shape, we derived the 3D shape of 2003 VS2. Results. Out of the 39 observatories involved in the observational campaign, 12 sites, located in Bulgaria (one), Romania (ten), and Serbia (one), reported a positive detection; this makes it one of the best observed stellar occultations by a TNO so far. Considering the rotational phase of 2003 VS2 during the stellar occultation and the rotational light curve amplitude derived (Am = 0.264 ± 0.017 mag), we obtained a mean area-equivalent diameter of DAeq = 545 ± 13 km and a geometric albedo of 0.134 ± 0.010. By combining the rotational light curve information with the stellar occultation results, we derived the best triaxial shape for 2003 VS2, which has semiaxes a = 339 ± 5 km, b = 235 ± 6 km, and c = 226 ± 8 km. The derived aspect angle of 2003 VS2 is θ = 59 ± 2 or its supplementary θ = 121 ± 2, depending on the north-pole position of the TNO. The spherical-volume equivalent diameter is DVeq = 524 ± 7 km. If we consider large albedo patches on its surface, the semi-major axis of the ellipsoid could be ∼ 10 km smaller. These results are compatible with the previous ones determined from the single-chord 2013 and four-chord 2014 stellar occultations and with the effective diameter and albedo derived from Herschel and Spitzer data. They provide evidence that 2003 VS2s 3D shape is not compatible with a homogeneous triaxial body in hydrostatic equilibrium, but it might be a differentiated body and/or might be sustaining some stress. No secondary features related to rings or material orbiting around 2003 VS2 were detected.-
Descrição: dc.descriptionInstituto De Astrofísica De Andalucía Consejo Superior De Investigaciones Científicas, Glorieta de la Astronomía S/N-
Descrição: dc.descriptionLesia Observatoire De Paris Université Psl Sorbonne Université Université De Paris Cnrs-
Descrição: dc.descriptionLaboratório Interinstitucional De E-Astronomia - LIneA & Inct Do E-Universo Bairro Imperial De São Cristóvão (RJ), Rua Gal. José Cristino 77-
Descrição: dc.descriptionUnesp - São Paulo State University Grupo De Dinámica Orbital E Planetologia, SP-
Descrição: dc.descriptionAstronomical Institute Of The Romanian Academy, 5 CuÂitul de Argint-
Descrição: dc.descriptionInstituto De Astrofísica De Canarias (IAC), C/Vía Láctea s/n La Laguna-
Descrição: dc.descriptionObservatório Nacional/MCTI, (RJ)-
Descrição: dc.descriptionFlorida Space Institute Ucf Partnership 1 Building, 12354 Research Parkway-
Descrição: dc.descriptionNaXys University Of Namur, 8 Rempart de la Vierge-
Descrição: dc.descriptionDepartment Of Astronomy Faculty Of Mathematics University Of Belgrade, Studentski trg 16-
Descrição: dc.descriptionHamburger Sternwarte Universität Hamburg, Gojenbergsweg 112-
Descrição: dc.descriptionAstronomical Observatory, Volgina 7-
Descrição: dc.descriptionInstitute Of Astronomy And National Astronomical Observatory Bulgarian Academy Of Sciences-
Descrição: dc.descriptionROASTERR-1 Observatory-
Descrição: dc.descriptionStardust Observatory-
Descrição: dc.descriptionAstroclubul Bucuresti-
Descrição: dc.descriptionStardreams Observatory-
Descrição: dc.descriptionRomanian Academy - Cluj-Napoca Branch Astronomical Observatory Cluj-
Descrição: dc.descriptionUniversity Of Craiova-
Descrição: dc.descriptionInstitutul De Stiinte Spatiale (ISS), Atomistilor 409, C.P.: 23 Magurele-
Descrição: dc.descriptionSocietatea Romana Pentru Astronomie Culturala (SRPAC)-
Descrição: dc.descriptionFederal University Of Technology - Paraná (UTFPR/DAFIS)-
Descrição: dc.descriptionInstitut Polytechnique Des Sciences Avancées Ipsa, 63 boulevard de Brandebourg-
Descrição: dc.descriptionInstitut De Mécanique Céleste Et De Calcul Des Ephémérides Imcce Observatoire De Paris Psl Research University Cnrs Sorbonne Universités Upmc Univ Paris 06 Univ. Lille, 77 Av. Denfert-Rochereau-
Descrição: dc.descriptionUniversidade Federal Do Rio De Janeiro Observatorio Do Valongo-
Descrição: dc.descriptionAstronomical Institute Of The Slovak Academy Of Sciences-
Descrição: dc.descriptionKonkoly Observatory Research Centre For Astronomy And Earth Sciences, Konkoly Thege Miklos ut 15-17-
Descrição: dc.descriptionOsservatorio Astrofísico Di Catania (OACt-INAF), Via S. Sofia 78-
Descrição: dc.descriptionElte Eötvös Loránd University Gothard Astrophysical Observatory-
Descrição: dc.descriptionMTA-ELTE Exoplanet Research Group, Szent Imre h. u. 112-
Descrição: dc.descriptionMt. Suhora Observatory Pedagogical University Of Cracow Limanowa County-
Descrição: dc.descriptionIsaac Newton Group Of Telescopes Santa Cruz De La Palma-
Descrição: dc.descriptionOsservatorio Astronomico Di Monte Agliale, Via Cune Motrone-
Descrição: dc.descriptionPDlink Observatory-
Descrição: dc.descriptionInaf - Osservatorio Astronomico Di Trieste, Via Tiepolo 11-
Descrição: dc.descriptionGruppo Astrofili Massesi Eaon-
Descrição: dc.descriptionInternational Occultation Timing Association - European Section (IOTA/ES)-
Descrição: dc.descriptionIa Cu Stele-
Descrição: dc.descriptionCrni Vrh Observatory-
Descrição: dc.descriptionFaculty Of Mathematics And Physics University Of Ljubljana-
Descrição: dc.descriptionDark Sky Slovenia, Savlje 89-
Descrição: dc.descriptionUnesp - São Paulo State University Grupo De Dinámica Orbital E Planetologia, SP-
Idioma: dc.languageen-
Relação: dc.relationAstronomy and Astrophysics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectKuiper belt objects: individual: 2003 VS2-
Palavras-chave: dc.subjectMethods: observational-
Palavras-chave: dc.subjectTechniques: photometric-
Título: dc.titleThe multichord stellar occultation on 2019 October 22 by the trans-Neptunian object (84922) 2003 VS2-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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