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

Indications for Regolith on Itokawa from Thermal-Infrared Observations

Mueller, Michael and Delbo, Marco and di Martino, Mario and Harris, Alan W. and Kaasalainen, Mikko and Bus, Schelte J. (2004) Indications for Regolith on Itokawa from Thermal-Infrared Observations. The first Hayabusa Symposium, 2004-10-20 - 2004-10-24, Sagamihara, Kanagawa, Japan. (Unpublished)

Full text not available from this repository.

Abstract

We report preliminary results of thermal-infrared observations of the near-Earth asteroid (25143) Itokawa made with the ESO 3.6m telescope in 2001 and the NASA IRTF in 2004. Using these and data from the literature we investigated the size and thermal properties of Itokawa. We were not able to obtain an un-ambiguous result for Itokawa’s size but we could reliably constrain the thermal properties of the surface. We use a detailed thermophysical model accounting explicitly for Itokawa’s shape and spin state, heat conduction, and surface roughness. Our results indicate that Itokawa’s surface is dominated by regolith rather than by bare rock; a surface of bare rock only is ruled out, although boulders covering a moderate percentage of the surface are not excluded.

Item URL in elib:https://elib.dlr.de/43620/
Document Type:Conference or Workshop Item (Speech)
Title:Indications for Regolith on Itokawa from Thermal-Infrared Observations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mueller, MichaelUNSPECIFIEDUNSPECIFIED
Delbo, MarcoINAF, Turin, ItalienUNSPECIFIED
di Martino, MarioINAF, Turin, ItalienUNSPECIFIED
Harris, Alan W.UNSPECIFIEDUNSPECIFIED
Kaasalainen, MikkoUniversität Helsinki, Rolf-Nevanlinna-InstitutUNSPECIFIED
Bus, Schelte J.University of HawaiiUNSPECIFIED
Date:December 2004
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:Asteroids
Event Title:The first Hayabusa Symposium
Event Location:Sagamihara, Kanagawa, Japan
Event Type:international Conference
Event Dates:2004-10-20 - 2004-10-24
Organizer:ISAS/JAXA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Asteroiden und Kometen (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Müller, Michael
Deposited On:13 Jul 2007
Last Modified:14 Jan 2010 23:18

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.