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The Shape of Comet 67P/Churyumov-Gerasimenko from Rosetta/Osiris Images

Jorda, L. and Gaskell, R. and Hviid, S. and Capanna, C. and Groussin, O. and Gutierrez, P. and Lamy, P. and Scholten, F. and Preusker, Frank and Keller, H. U. and Knollenberg, J. and Kührt, E. and Mottola, S. and Sierks, H. and Snodgrass, C. and Thomas, N. and Vincent, J.-B. and Marchi, S. and Massironi, M. (2014) The Shape of Comet 67P/Churyumov-Gerasimenko from Rosetta/Osiris Images. In: AGU Fall Meeting 2014. AGU Fall Meeting 2014, 15.-19. Dez. 2014, San Francisco, California, USA.

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Official URL: https://agu.confex.com/agu/fm14/meetingapp.cgi#Paper/11420

Abstract

The ROSETTA mission has reached the nucleus of comet 67P/Churyumov-Gerasimenko in early August, allowing a detailed mapping of its surface with the onboard OSIRIS imaging system, up to resolutions of 50 cm or even better in some areas. Shape reconstruction techniques have been used since July 2014 to build a very detailed 3D model of the comet surface and to retrieve highly accurate rotational parameters. The attached Figure shows an early 3D shape of the comet. The most striking property of the global shape is the presence of two clearly separated components. We use a combination of images and 3D models to quantitatively characterize their bulk and surface properties: relative position, volume, topography and roughness. The position of the center of mass and the direction of the principal axis of rotation are used to constrain the internal mass distribution. Digital terrain models, slope, gravity, and geo-referenced images of the most interesting features observed at the surface of the comet are presented and consequences for their formation are discussed. If they are detected, topographic changes which could have occured between August and December 2014 are also presented.

Item URL in elib:https://elib.dlr.de/94250/
Document Type:Conference or Workshop Item (Poster)
Title:The Shape of Comet 67P/Churyumov-Gerasimenko from Rosetta/Osiris Images
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jorda, L.Laboratoire d'Astrophysique de MarseilleUNSPECIFIED
Gaskell, R.Planetary Science Institute, Tucson, AZ, USAUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Capanna, C.Laboratoire d'Astrophysique de MarseilleUNSPECIFIED
Groussin, O.Lab. d'Astrophysique de Marseille, FranceUNSPECIFIED
Gutierrez, P.IAA-CSIC, Granada, SpainUNSPECIFIED
Lamy, P.Laboratoire d'Astrophysique de MarseilleUNSPECIFIED
Scholten, F.frank.scholten (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Keller, H. U.Technical University of BraunschwegUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kührt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Snodgrass, C.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Thomas, N.University of Bern, SwitzerlandUNSPECIFIED
Vincent, J.-B.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Marchi, S.NASA Lunar Science Institute, Boulder, COUNSPECIFIED
Massironi, M.University of Padova, ItalyUNSPECIFIED
Date:December 2014
Journal or Publication Title:AGU Fall Meeting 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Rosetta, OSIRIS, Comet, 67P/Churyumov-Gerasimenko, Shape
Event Title:AGU Fall Meeting 2014
Event Location:San Francisco, California, USA
Event Type:international Conference
Event Dates:15.-19. Dez. 2014
Organizer:American Geophysical Union
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 - Project ROSETTA Instruments
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Asteroids and Comets
Deposited By: Scholten, Dipl.-Ing. Frank
Deposited On:07 Jan 2015 09:51
Last Modified:01 Dec 2018 19:51

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