elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

The 2017 May 20 stellar occultation by the elongated centaur (95626) 2002 GZ32

Santos-Sanz, P. and Ortiz, J L and Sicardy, B. and Benedetti-Rossi, G. and Morales, N. and Fernández-Valenzuela, E. and Duffard, R. and Iglesias-Marzoa, R. and Lamadrid, J L and Maícas, N and Pérez, L and Gazeas, K. and Guirado, J C and Peris, V. and Ballesteros, F J and Organero, F. and Ana-Hernández, L and Fonseca, F and Alvarez-Candal, A. and Jiménez-Teja, Y and Vara-Lubiano, M. and Braga-Ribas, F. and Camargo, J I B and Desmars, J. and Assafin, M. and Vieira-Martins, R. and Alikakos, J. and Boutet, M and Bretton, M and Carbognani, A. and Charmandaris, V. and Ciabattari, F. and Delincak, P and Fuambuena Leiva, A and González, H and Haymes, T and Hellmich, Stephan and Horbowicz, J and Jennings, M and Kattentidt, B and Kiss, Cs and Komžík, R. and Lecacheux, J. and Marciniak, A. and Moindrot, S and Mottola, S and Pal, Andras and Paschalis, N. and Pastor, S. and Perelló, C. and Pribulla, T. and Ratinaud, C and Reyes, J A and Sanchez, J and Schnabel, C. and Selva, A and Signoret, F and Sonbas, E and Alí-Lagoa, V. (2021) The 2017 May 20 stellar occultation by the elongated centaur (95626) 2002 GZ32. Monthly Notices of the Royal Astronomical Society, 501 (4), pp. 6062-6075. Oxford University Press. doi: 10.1093/mnras/staa3881. ISSN 0035-8711.

[img] PDF - Registered users only - Published version
3MB

Official URL: http://dx.doi.org/10.1093/mnras/staa3881

Abstract

We predicted a stellar occultation of the bright star Gaia DR1 4332852996360346368 (UCAC4 385-75921) (mV = 14.0 mag) by the centaur 2002 GZ32 for 2017 May 20. Our latest shadow path prediction was favourable to a large region in Europe. Observations were arranged in a broad region inside the nominal shadow path. Series of images were obtained with 29 telescopes throughout Europe and from six of them (five in Spain and one in Greece) we detected the occultation. This is the fourth centaur, besides Chariklo, Chiron, and Bienor, for which a multichord stellar occultation is reported. By means of an elliptical fit to the occultation chords, we obtained the limb of 2002 GZ32 during the occultation, resulting in an ellipse with axes of 305 ± 17 km × 146 ± 8 km. From this limb, thanks to a rotational light curve obtained shortly after the occultation, we derived the geometric albedo of 2002 GZ32 (pV = 0.043 ± 0.007) and a 3D ellipsoidal shape with axes 366 km × 306 km × 120 km. This shape is not fully consistent with a homogeneous body in hydrostatic equilibrium for the known rotation period of 2002 GZ32. The size (albedo) obtained from the occultation is respectively smaller (greater) than that derived from the radiometric technique but compatible within error bars. No rings or debris around 2002 GZ32 were detected from the occultation, but narrow and thin rings cannot be discarded.

Item URL in elib:https://elib.dlr.de/140754/
Document Type:Article
Title:The 2017 May 20 stellar occultation by the elongated centaur (95626) 2002 GZ32
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Santos-Sanz, P.Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, SpainUNSPECIFIED
Ortiz, J LInstituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, SpainUNSPECIFIED
Sicardy, B.Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique (LESIA), Observatoire de Paris-Meudon, 92195 Meudon Cedex, FranceUNSPECIFIED
Benedetti-Rossi, G.LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Morales, N.Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, SpainUNSPECIFIED
Fernández-Valenzuela, E.Florida Space Institute, University of Central Florida, 12354 Research Parkway, Partnership 1, Orlando, FL, USAUNSPECIFIED
Duffard, R.Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, SpainUNSPECIFIED
Iglesias-Marzoa, R.Centro de Estudios de Física del Cosmos de Aragón, Teruel, SpainUNSPECIFIED
Lamadrid, J LCentro de Estudios de Física del Cosmos de Aragón, Teruel, SpainUNSPECIFIED
Maícas, NCentro de Estudios de Física del Cosmos de Aragón, Teruel, SpainUNSPECIFIED
Pérez, LObservatorio de Allariz, 32660 Allariz, Orense, SpainUNSPECIFIED
Gazeas, K.Section of Astrophysics, Astronomy and Mechanics, Department of Physics, AthensUNSPECIFIED
Guirado, J CObservatori Astron`omic de la Universitat de Val`encia, 46980 Paterna, Valencia, SpainUNSPECIFIED
Peris, V.Observatorio Astronómico, Universidad de Valencia, Valencia, SpainUNSPECIFIED
Ballesteros, F JObservatori Astron`omic de la Universitat de Val`encia, 46980 Paterna, Valencia, SpainUNSPECIFIED
Organero, F.Observatorio astronomico de La HitaUNSPECIFIED
Ana-Hernández, LObservatorio astronomico de La HitaUNSPECIFIED
Fonseca, FObservatorio astronomico de La HitaUNSPECIFIED
Alvarez-Candal, A.Observatório Nacional/MCTIC, Rio de Janeiro, BrazilUNSPECIFIED
Jiménez-Teja, YObservat´orio Nacional/MCTIC, Rio de Janeiro - RJ, 20921-400, BrazilUNSPECIFIED
Vara-Lubiano, M.Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, SpainUNSPECIFIED
Braga-Ribas, F.Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43, 20080-090 Rio de Janeiro, BrazilUNSPECIFIED
Camargo, J I BObservat´orio Nacional/MCTIC, Rio de Janeiro - RJ, 20921-400, BrazilUNSPECIFIED
Desmars, J.Institut Polytechnique des Sciences Avancées IPSA, 63 boulevard de Brandebourg, 94200 Ivry-sur-Seine, FranceUNSPECIFIED
Assafin, M.Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43, 20080-090 Rio de Janeiro, BrazilUNSPECIFIED
Vieira-Martins, R.Observatório Nacional/MCTIC, Rio de Janeiro, BrazilUNSPECIFIED
Alikakos, J.Institute for Astronomy, Astrophysics, Space Applications & Remote Sensing, National Observatory of Athens, Athens, GreeceUNSPECIFIED
Boutet, MLatrape Observatory, 38500 Toulouse, FranceUNSPECIFIED
Bretton, MObservatoire des Baronnies Provenc¸ales, 05150 Moydans, FranceUNSPECIFIED
Carbognani, A.INAF – Osservatorio di Astrofisica e Scienza dello Spazio, Bologna, ItalyUNSPECIFIED
Charmandaris, V.Institute for Astronomy, Astrophysics, Space Applications & Remote Sensing, National Observatory of Athens, Athens, GreeceUNSPECIFIED
Ciabattari, F.Osservatorio Astronomico di Monte Agliale, Lucca, ItalyUNSPECIFIED
Delincak, PPDlink Observatory, 022 01 Cadca, SlovakiaUNSPECIFIED
Fuambuena Leiva, AT´elescope Leonard de Vinci, 06633 Antibes, FranceUNSPECIFIED
González, HT´elescope Leonard de Vinci, 06633 Antibes, FranceUNSPECIFIED
Haymes, TSmithy Observatory, Hill Rise, RG10 9YD Knowl Hill Common, UK, for the British Astronomical Association, UKUNSPECIFIED
Hellmich, StephanStephan.Hellmich (at) dlr.deUNSPECIFIED
Horbowicz, JAstronomical Observatory Institute, Faculty of Physics, A. Mickiewicz University, Sloneczna 36, PL-60-286 Pozna´n, PolandUNSPECIFIED
Jennings, MHamsey Green Observatory, CR2 9BF London, UKUNSPECIFIED
Kattentidt, BNeutraubling D-93073, Regensburg, GermanyUNSPECIFIED
Kiss, CsKonkoly Observatory, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary; ELTE E ̈otv ̈os Loránd University, Institute of Physics, Budapest,HungaryUNSPECIFIED
Komžík, R.Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica, SlovakiaUNSPECIFIED
Lecacheux, J.LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Marciniak, A.Astronomical Observatory Institute, Faculty of Physics, A. Mickiewicz University, Poznan, PolandUNSPECIFIED
Moindrot, SObservatoire de Puimichel, 04700 Alpes-de-Haute-Provence, FranceUNSPECIFIED
Mottola, Sstefano.mottola (at) dlr.dehttps://orcid.org/0000-0002-0457-3872
Pal, AndrasKonkoly Observatory, HungaryUNSPECIFIED
Paschalis, N.Nunki Observatory, GreeceUNSPECIFIED
Pastor, S.Observatorio de la MurtaUNSPECIFIED
Perelló, C.International Occultation Timing Association - European Section (IOTA-ES), GermanyUNSPECIFIED
Pribulla, T.Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, SlovakiaUNSPECIFIED
Ratinaud, CLandehen Observatory, 22400 Landehen, FranceUNSPECIFIED
Reyes, J ALa Murta Observatory – Astromurcia, 30153 La Murta, Murcia, SpainUNSPECIFIED
Sanchez, JLatrape Observatory, 38500 Toulouse, FranceUNSPECIFIED
Schnabel, C.International Occultation Timing Association - European Section (IOTA-ES), GermanyUNSPECIFIED
Selva, AAgrupaci´oAstron`omica de Sabadell, 08206 Sabadell, Barcelona, SpainUNSPECIFIED
Signoret, FT´elescope L´eonard de Vinci, 06633 Antibes, FranceUNSPECIFIED
Sonbas, EDepartment of Physics, University of Adiyaman, 02040 Adiyaman, TurkeyUNSPECIFIED
Alí-Lagoa, V.Max Planck Institut für extraterrestrische Physik (MPE), Garching, GermanyUNSPECIFIED
Date:2021
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:501
DOI :10.1093/mnras/staa3881
Page Range:pp. 6062-6075
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:methods: observational – techniques: photometric – occultations – Kuiper Belt objects: individual: 2002 GZ32.
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 - LUCY
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Institute of Planetary Research > Planetary Geodesy
Deposited By: Mottola, Dr.phys. Stefano
Deposited On:18 Feb 2021 13:43
Last Modified:18 Feb 2021 13:43

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.