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Thermal properties of comet 67P derived from Rosetta/VIRTIS, and orbital observations of Philae landing site

Drossart, P. and Leyrat, C. and Erard, S. and Capria, M. T. and Capaccioni, F. and Filacchione, G. and Tosi, F. and De Sanctis, M.C. and Arnold, Gabriele and Markus, Kathrin and Bockelee-Morvan, D. and Schmitt, B. and Formisano, V. and Kuehrt, E. and VIRTIS, Science Team (2014) Thermal properties of comet 67P derived from Rosetta/VIRTIS, and orbital observations of Philae landing site. In: 46th Annual Meeting of the Division for Planetary Sciences of the American-Astronomical-Society, 46, 103.2-103.2. 46th Meeting of the Division for Planetary Sciences, 09.-14. Nov. 2014, Tucson, AZ, USA.

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Official URL: http://files.aas.org/dps46/dps46_abstract_book.pdf


The Rosetta spacecraft has reached its final target, comet 67P/Churyumov-Gerasimenko, in early August 2014. The VIRTIS imaging spectrometer onboard the Rosetta orbiter has intensively observed both the nucleus and the coma environment in the 0.25-5 microns wavelength range. Nucleus observations are performed with both channels: VIRTIS-M for spectral mapping and VIRTIS-H for high spectral resolution. Dayside surface temperatures in various illumination conditions can be retrieved from the long wavelength range. This allows us to infer local thermal properties. The very irregular shape of 67P results in unusual patterns in the heating / cooling regime of the object, e.g. sudden transitions from day to night. We will present thermal analyses of observations performed during the first mapping phase of the pre-landing activity (August 2014), with a focus on thermo-physical modeling of comet 67P on both regional and local scales, and a special emphasis on the expected landing site. These observations document the state of the comet surface at a time of large heliocentric distance and low activity.

Item URL in elib:https://elib.dlr.de/92310/
Document Type:Conference or Workshop Item (Speech)
Title:Thermal properties of comet 67P derived from Rosetta/VIRTIS, and orbital observations of Philae landing site
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Drossart, P.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Capria, M. T.Instituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIED
Filacchione, G.INAF-IASF, Rome, ItalyUNSPECIFIED
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
De Sanctis, M.C.Istituto Nazionale di Astrofisica, Rome, Italy.UNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Markus, KathrinWestfälische Wilhelms-Universität MünsterUNSPECIFIED
Bockelee-Morvan, D.Observatoire de Paris, MeudonUNSPECIFIED
Schmitt, B.Grenoble Planetology LaboratoryUNSPECIFIED
Formisano, V.Istituto Fisica Spazio Interplanetario, CNR, Roma, ItalyUNSPECIFIED
Kuehrt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Date:10 November 2014
Journal or Publication Title:46th Annual Meeting of the Division for Planetary Sciences of the American-Astronomical-Society
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:103.2-103.2
Keywords:Rosetta, VIRTIS, 67P/Churyumov-Gerasimenko, Thermal, Landing site
Event Title:46th Meeting of the Division for Planetary Sciences
Event Location:Tucson, AZ, USA
Event Type:international Conference
Event Dates:09.-14. Nov. 2014
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 Physics
Institute of Planetary Research > Asteroids and Comets
Deposited By: Kappel, David
Deposited On:24 Nov 2014 08:06
Last Modified:24 Nov 2014 08:06

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