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Thermophysical modeling of Didymos' moon for the Asteroid Impact Mission

Pelivan, Ivanka and Drube, Line and Kührt, Ekkehard and Helbert, Jörn and Biele, Jens and Maibaum, Michael and Cozzoni, Barbara and Lommatsch, Valentina (2017) Thermophysical modeling of Didymos' moon for the Asteroid Impact Mission. Advances in Space Research, 59, pp. 1936-1949. Elsevier. DOI: 10.1016/j.asr.2016.12.041 ISSN 0273-1177

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Official URL: http://adsabs.harvard.edu/abs/2017AdSpR..59.1936P

Abstract

Although typically less resolved through observations, the secondary in a binary system of asteroids is an interesting target for space missions such as the Asteroid Impact Mission. Estimates of the surface temperature distribution are important for mission design. Based on known, assumed and derived physical properties, a thermophysical model of the smaller body in the 65803 Didymos system is established. Because of the unknown thermal inertia, a parameter study has been carried out for a thermal inertia range of 50 -1000 J m-2 K-1 s-1/2. Results are presented for the minimum and maximum values of this range and a likely value of 500 J m-2 K-1 s-1/2. The parameter study extends from the unshadowed to the eclipsed case where shadowing through the primary is simulated in a simplified manner assuming that the orbit of the moon lies in the equatorial plane of the primary with its z-axis normal to this plane. Results from this study are used to investigate performance for instruments foreseen for the Asteroid Impact Mission. Preliminary results are obtained for the signal-to-noise ratio of a proposed thermal infrared imager. Furthermore, MASCOT-2 Lander thermal survivability has been investigated for several possible landing sites and specific settings.

Item URL in elib:https://elib.dlr.de/115166/
Document Type:Article
Title:Thermophysical modeling of Didymos' moon for the Asteroid Impact Mission
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pelivan, IvankaIvanka.Pelivan (at) dlr.deUNSPECIFIED
Drube, LineLine.Drube (at) dlr.dehttps://orcid.org/0000-0003-2486-8894
Kührt, EkkehardEkkehard.Kuehrt (at) dlr.deUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.deUNSPECIFIED
Biele, JensJens.Biele (at) dlr.deUNSPECIFIED
Maibaum, Michaeldlr, michael.maibaum (at) dlr.deUNSPECIFIED
Cozzoni, Barbaradlr-köln, barbara.cozzoni (at) dlr.deUNSPECIFIED
Lommatsch, Valentinadlr-köln, valentina.lommatsch (at) dlr.deUNSPECIFIED
Date:April 2017
Journal or Publication Title:Advances in Space Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:59
DOI :10.1016/j.asr.2016.12.041
Page Range:pp. 1936-1949
Publisher:Elsevier
ISSN:0273-1177
Status:Published
Keywords:Asteroid thermophysical modeling, Binary asteroid system, AIM mission, MASCOT, Thermal infrared imager
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 , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Institute of Planetary Research > Leitungsbereich PF
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Pelivan, Ivanka
Deposited On:10 Nov 2017 12:52
Last Modified:06 Sep 2019 15:27

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