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The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation

Ortiz, J. L. and Santos-Sanz, P. and Sicardy, B. and Benedetti-Rossi, G. and Bérard, D. and Morales, N. and Duffard, R. and Braga-Ribas, F. and Hopp, U. and Ries, C. and Nascimbeni, V. and Marzari, F. and Granata, V. and Pal, A. and Kiss, C. and Pribulla, T. and Komžík, R. and Hornoch, K. and Pravec, P. and Bacci, P. and Maestripieri, M. and Nerli, L. and Mazzei, L. and Bachini, M. and Martinelli, F. and Succi, G. and Ciabattari, F. and Mikuz, H. and Carbognani, A. and Gaehrken, B. and Mottola, Stefano and Hellmich, Stephan and Rommel, F. L. and Fernández-Valenzuela, E. and Bagatin, A. Campo and Cikota, S. and Cikota, A. and Lecacheux, J. and Vieira-Martins, R. and Camargo, J. I. B. and Assafin, M. and Colas, F. and Behrend, R. and Desmars, J. and Meza, E. and Alvarez-Candal, A. and Beisker, W. and Gomes-Junior, A. R. and Morgado, B. E. and Roques, F. and Vachier, F. and Berthier, J. and Mueller, T. G. and Madiedo, J. M. and Unsalan, O. and Sonbas, E. and Karaman, N. and Erece, O. and Koseoglu, D. T. and Ozisik, T. and Kalkan, S. and Guney, Y. and Niaei, M. S. and Satir, O. and Yesilyaprak, C. and Puskullu, C. and Kabas, A. and Demircan, O. and Alikakos, J. and Charmandaris, V. and Leto, G. and Ohlert, J. and Christille, J. M. and Szakáts, R. and Farkas, A. Takácsné and Varga-Verebélyi, E. and Marton, G. and Marciniak, A. and Bartczak, P. and Santana-Ros, T. and Butkiewicz-Bąk, M. and Dudziński, G. and Alí-Lagoa, V. and Gazeas, K. and Tzouganatos, L. and Paschalis, N. and Tsamis, V. and Sánchez-Lavega, A. and Pérez-Hoyos, S. and Hueso, R. and Guirado, J. C. and Peris, V. and Iglesias-Marzoa, R. (2017) The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation. Nature, 550 (7675), pp. 219-223. Nature Publishing Group. doi: 10.1038/nature24051. ISSN 0028-0836.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1038/nature24051

Abstract

Haumea—one of the four known trans-Neptunian dwarf planets—is a very elongated and rapidly rotating body. In contrast to other dwarf planets, its size, shape, albedo and density are not well constrained. The Centaur Chariklo was the first body other than a giant planet known to have a ring system, and the Centaur Chiron was later found to possess something similar to Chariklo’s rings. Here we report observations from multiple Earth-based observatories of Haumea passing in front of a distant star (a multi-chord stellar occultation). Secondary events observed around the main body of Haumea are consistent with the presence of a ring with an opacity of 0.5, width of 70 kilometres and radius of about 2,287 kilometres. The ring is coplanar with both Haumea’s equator and the orbit of its satellite Hi’iaka. The radius of the ring places it close to the 3:1 mean-motion resonance with Haumea’s spin period—that is, Haumea rotates three times on its axis in the time that a ring particle completes one revolution. The occultation by the main body provides an instantaneous elliptical projected shape with axes of about 1,704 kilometres and 1,138 kilometres. Combined with rotational light curves, the occultation constrains the three-dimensional orientation of Haumea and its triaxial shape, which is inconsistent with a homogeneous body in hydrostatic equilibrium. Haumea’s largest axis is at least 2,322 kilometres, larger than previously thought, implying an upper limit for its density of 1,885 kilograms per cubic metre and a geometric albedo of 0.51, both smaller than previous estimates. In addition, this estimate of the density of Haumea is closer to that of Pluto than are previous estimates, in line with expectations. No global nitrogen- or methane-dominated atmosphere was detected.

Item URL in elib:https://elib.dlr.de/116443/
Document Type:Article
Title:The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Ortiz, J. L.Instituto de Astrofísica de AndalucíaUNSPECIFIEDUNSPECIFIED
Santos-Sanz, P.Instituto de Astrofísica de AndalucíaUNSPECIFIEDUNSPECIFIED
Sicardy, B.observatoire de paris, meudon, franceUNSPECIFIEDUNSPECIFIED
Benedetti-Rossi, G.Observatório Nacional/MCTICUNSPECIFIEDUNSPECIFIED
Bérard, D.observatoire de paris, meudon, franceUNSPECIFIEDUNSPECIFIED
Morales, N.instituto de astrofısica de andalucıaUNSPECIFIEDUNSPECIFIED
Duffard, R.instituto de astrofısica de andalucıaUNSPECIFIEDUNSPECIFIED
Braga-Ribas, F.Observatório Nacional/MCTICUNSPECIFIEDUNSPECIFIED
Hopp, U.Universitäts-Sternwarte MünchenUNSPECIFIEDUNSPECIFIED
Ries, C.Universitäts-Sternwarte MünchenUNSPECIFIEDUNSPECIFIED
Nascimbeni, V.Dipartimento di Fisica e AstronomiaUNSPECIFIEDUNSPECIFIED
Marzari, F.dipartimento di fisica e astronomia “g. galilei”, university of padova, vic. osservatorio 3, 35122 padova, italyUNSPECIFIEDUNSPECIFIED
Granata, V.Dipartimento di Fisica e AstronomiaUNSPECIFIEDUNSPECIFIED
Pal, A.konkoly observatoryUNSPECIFIEDUNSPECIFIED
Kiss, C.konkoly observatoryUNSPECIFIEDUNSPECIFIED
Pribulla, T.astronomical institute, slovak academy of sciencesUNSPECIFIEDUNSPECIFIED
Komžík, R.astronomical institute, slovak academy of sciencesUNSPECIFIEDUNSPECIFIED
Hornoch, K.astronomical institute, academy of sciences of the czech republic, fricova 1, cz-25165 ondrejov, czech republicUNSPECIFIEDUNSPECIFIED
Pravec, P.astronomical institute, academy of sciences of the czech republic, fricova 1, cz-25165 ondrejov, czech republicUNSPECIFIEDUNSPECIFIED
Bacci, P.Astronomical Observatory San Marcello PistoieseUNSPECIFIEDUNSPECIFIED
Maestripieri, M.Astronomical Observatory San Marcello PistoieseUNSPECIFIEDUNSPECIFIED
Nerli, L.Astronomical Observatory San Marcello PistoieseUNSPECIFIEDUNSPECIFIED
Mazzei, L.Astronomical Observatory San Marcello PistoieseUNSPECIFIEDUNSPECIFIED
Bachini, M.Osservatorio astronomico di Tavolaia,UNSPECIFIEDUNSPECIFIED
Martinelli, F.Lajatico Astronomical Centre,UNSPECIFIEDUNSPECIFIED
Succi, G.Osservatorio astronomico di Tavolaia,UNSPECIFIEDUNSPECIFIED
Ciabattari, F.Osservatorio Astronomico di Monte AglialeUNSPECIFIEDUNSPECIFIED
Mikuz, H.Cni Vrh ObservatoryUNSPECIFIEDUNSPECIFIED
Carbognani, A.astronomical observatory of the autonomous region of the aosta valley, loc. lignan 39, 11020 nus (aosta), italyUNSPECIFIEDUNSPECIFIED
Gaehrken, B.Bayerische Volkssternwarte MünchenUNSPECIFIEDUNSPECIFIED
Mottola, StefanoUNSPECIFIEDhttps://orcid.org/0000-0002-0457-3872UNSPECIFIED
Hellmich, StephanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rommel, F. L.Federal University of Technology-ParanáUNSPECIFIEDUNSPECIFIED
Fernández-Valenzuela, E.Instituto de Astrofísica de AndalucíaUNSPECIFIEDUNSPECIFIED
Bagatin, A. CampoDepartamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Universidad de AlicanteUNSPECIFIEDUNSPECIFIED
Cikota, S.University of Zagreb, Faculty of Electrical Engineering and ComputingUNSPECIFIEDUNSPECIFIED
Cikota, A.European Southern ObservatoryUNSPECIFIEDUNSPECIFIED
Lecacheux, J.LESIA, Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Vieira-Martins, R.Observatório Nacional/MCTICUNSPECIFIEDUNSPECIFIED
Camargo, J. I. B.Observatório Nacional/MCTIC,UNSPECIFIEDUNSPECIFIED
Assafin, M.observatório do valongo/ufrj, ladeira pedro antonio 43, 20080-090 rio de janeiro, brazilUNSPECIFIEDUNSPECIFIED
Colas, F.IMCCE/Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Behrend, R.observatoire de geneve, switzerlandUNSPECIFIEDUNSPECIFIED
Desmars, J.LESIA, Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Meza, E.LESIA, Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Alvarez-Candal, A.Observatório Nacional/MCTICUNSPECIFIEDUNSPECIFIED
Beisker, W.International Occultation Timing Association—European Section (IOTA-ESUNSPECIFIEDUNSPECIFIED
Gomes-Junior, A. R.Observatório do Valongo/UFRJUNSPECIFIEDUNSPECIFIED
Morgado, B. E.Observatório Nacional/MCTICUNSPECIFIEDUNSPECIFIED
Roques, F.LESIA, Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Vachier, F.IMCCE/Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Berthier, J.IMCCE/Observatoire de ParisUNSPECIFIEDUNSPECIFIED
Mueller, T. G.Max-Planck-Institut für Extraterrestrische PhysikUNSPECIFIEDUNSPECIFIED
Madiedo, J. M.Facultad de Ciencias ExperimentalesUNSPECIFIEDUNSPECIFIED
Unsalan, O.Ege University, Faculty of ScienceUNSPECIFIEDUNSPECIFIED
Sonbas, E.University of AdiyamanUNSPECIFIEDUNSPECIFIED
Karaman, N.University of AdiyamanUNSPECIFIEDUNSPECIFIED
Erece, O.TUBITAK National Observatory (TUG)UNSPECIFIEDUNSPECIFIED
Koseoglu, D. T.TUBITAK National Observatory (TUG)UNSPECIFIEDUNSPECIFIED
Ozisik, T.TUBITAK National Observatory (TUG)UNSPECIFIEDUNSPECIFIED
Kalkan, S.Ondokuz Mayis University ObservatoryUNSPECIFIEDUNSPECIFIED
Guney, Y.Atatürk University, Science FacultyUNSPECIFIEDUNSPECIFIED
Niaei, M. S.Atatürk UniversityUNSPECIFIEDUNSPECIFIED
Satir, O.Atatürk UniversityUNSPECIFIEDUNSPECIFIED
Yesilyaprak, C.Atatürk UniversityUNSPECIFIEDUNSPECIFIED
Puskullu, C.Canakkale Onsekiz Mart UniversityUNSPECIFIEDUNSPECIFIED
Kabas, A.Canakkale Onsekiz Mart UniversityUNSPECIFIEDUNSPECIFIED
Demircan, O.Canakkale Onsekiz Mart UniversityUNSPECIFIEDUNSPECIFIED
Alikakos, J.Institute for Astronomy, Astrophysics, Space Applications and Remote SensingUNSPECIFIEDUNSPECIFIED
Charmandaris, V.Institute for Astronomy, Astrophysics, Space Applications and Remote SensingUNSPECIFIEDUNSPECIFIED
Leto, G.INAF—Catania Astrophysical Observatory,UNSPECIFIEDUNSPECIFIED
Ohlert, J.Michael Adrian ObservatoriumUNSPECIFIEDUNSPECIFIED
Christille, J. M.Astronomical Observatory of the Autonomous Region of the Aosta Valley (OAVdA)UNSPECIFIEDUNSPECIFIED
Szakáts, R.konkoly observatoryUNSPECIFIEDUNSPECIFIED
Farkas, A. Takácsnékonkoly observatoryUNSPECIFIEDUNSPECIFIED
Varga-Verebélyi, E.konkoly observatoryUNSPECIFIEDUNSPECIFIED
Marton, G.konkoly observatoryUNSPECIFIEDUNSPECIFIED
Marciniak, A.astronomical observatory institute, faculty of physics, a. mickiewicz university, słoneczna 36, 60-286 poznań, polandUNSPECIFIEDUNSPECIFIED
Bartczak, P.astronomical observatory institute, faculty of physics, a. mickiewicz university, słoneczna 36, 60-286 poznań, polandUNSPECIFIEDUNSPECIFIED
Santana-Ros, T.astronomical observatory institute, faculty of physics, a. mickiewicz university, słoneczna 36, 60-286 poznań, polandUNSPECIFIEDUNSPECIFIED
Butkiewicz-Bąk, M.astronomical observatory institute, faculty of physics, a. mickiewicz university, słoneczna 36, 60-286 poznań, polandUNSPECIFIEDUNSPECIFIED
Dudziński, G.astronomical observatory institute, faculty of physics, a. mickiewicz university, słoneczna 36, 60-286 poznań, polandUNSPECIFIEDUNSPECIFIED
Alí-Lagoa, V.Max-Planck-Institut für Extraterrestrische PhysikUNSPECIFIEDUNSPECIFIED
Gazeas, K.Section of Astrophysics, Astronomy and Mechanics, Department of PhysicsUNSPECIFIEDUNSPECIFIED
Tzouganatos, L.Section of Astrophysics, Astronomy and Mechanics, Department of PhysicsUNSPECIFIEDUNSPECIFIED
Paschalis, N.Nunki ObservatoryUNSPECIFIEDUNSPECIFIED
Tsamis, V.Ellinogermaniki Agogi ObservatoryUNSPECIFIEDUNSPECIFIED
Sánchez-Lavega, A.Departamento de Física Aplicada IUNSPECIFIEDUNSPECIFIED
Pérez-Hoyos, S.Departamento de Física Aplicada IUNSPECIFIEDUNSPECIFIED
Hueso, R.Departamento de Física Aplicada IUNSPECIFIEDUNSPECIFIED
Guirado, J. C.Observatori Astronòmic de la Universitat de ValènciaUNSPECIFIEDUNSPECIFIED
Peris, V.Observatori Astronòmic de la Universitat de ValènciaUNSPECIFIEDUNSPECIFIED
Iglesias-Marzoa, R.Centro de Estudios de Física del Cosmos de AragónUNSPECIFIEDUNSPECIFIED
Date:October 2017
Journal or Publication Title:Nature
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:550
DOI:10.1038/nature24051
Page Range:pp. 219-223
Publisher:Nature Publishing Group
ISSN:0028-0836
Status:Published
Keywords:Asteroid, dwarf planet, size, shape, density, ring, Trans Neptunian Object, stellar occultation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Hellmich, Stephan
Deposited On:01 Dec 2017 09:00
Last Modified:28 Mar 2023 23:50

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