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Mass, Density and Composition of the Nucleus 67P/Churyumov-Gerasimenko

Pätzold, Martin and Hahn, Matthias and Bird, Michael K. and Peter, Kerstin and Tellmann, Silvia and Andert, Thomas and Häusler, Bernd and Asmar, Sami W. and Weissman, Paul and Barriot, Jean-Pierre and Grün, Eberhard and Sierks, Holger and Jorda, Laurent and Preusker, Frank and Scholten, Frank (2015) Mass, Density and Composition of the Nucleus 67P/Churyumov-Gerasimenko. Annual Meeting of the Division for Planetary Sciences, 08-13 Nov 2015, Washington, Dc, USA.

Full text not available from this repository.

Abstract

Cometary nuclei consist mostly of dust and water ice, but the internal structure of a comet nucleus is essentially unknown. Bulk properties such as mass, volume (size and shape), and particularly the density, must be known for constraining its internal structure. The radio science experiment RSI on the Rosetta spacecraft derived the mass and the gravity field of comet 67P/Churyumov-Gerasimenko at distances varying between 100 km and 10 km, and together with the current best estimates of the volume by the OSIRIS camera, the bulk density of the nucleus. A model of the internal structure is derived from the information of two shape models by comparing observed and theoretical gravity coefficients. The comet nucleus appears to be a body of low mass, low density and high porosity with approximately four times more dust than ice by mass and 1.5 times more dust than ice by volume.

Item URL in elib:https://elib.dlr.de/101365/
Document Type:Conference or Workshop Item (Speech)
Title:Mass, Density and Composition of the Nucleus 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pätzold, MartinUniversität zu KölnUNSPECIFIED
Hahn, MatthiasUniversität zu KölnUNSPECIFIED
Bird, Michael K.Universität zu KölnUNSPECIFIED
Peter, KerstinUniversität zu KölnUNSPECIFIED
Tellmann, SilviaUniversität zu KölnUNSPECIFIED
Andert, ThomasInstitut für Raumfahrttechnik, Universität der Bundeswehr München, Neubiberg, GermanyUNSPECIFIED
Häusler, BerndInstitut für Raumfahrttechnik, Universität der Bundeswehr München, Neubiberg, GermanyUNSPECIFIED
Asmar, Sami W.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States.UNSPECIFIED
Weissman, PaulJPL, Pasadena, USAUNSPECIFIED
Barriot, Jean-PierreUniversite de la Polynesie Francaise, Naaa, FRENCH POLYNESIAUNSPECIFIED
Grün, EberhardMPI für Kernpyhsik, HeidelbergUNSPECIFIED
Sierks, HolgerMax-Planck-Institut für SonnensystemforschungUNSPECIFIED
Jorda, LaurentLaboratoire d'Astrophysique MarseilleUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Rosetta, 67P, Radio Science, OSIRIS, Mass, Density, Composition
Event Title:Annual Meeting of the Division for Planetary Sciences
Event Location:Washington, Dc, USA
Event Type:international Conference
Event Dates:08-13 Nov 2015
Organizer:American Astronomical Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Deposited By: Scholten, Dipl.-Ing. Frank
Deposited On:05 Jan 2016 13:15
Last Modified:10 May 2016 23:39

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