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Magnetic field measurements during the ROSETTA flyby at asteroid (21) Lutetia

Richter, I. and Auster, H. U. and Glassmeier, K.H. and Koenders, C. and Carr, C.M. and Motschmann, U. and Müller, J. and McKenna-Lawlor, S. (2011) Magnetic field measurements during the ROSETTA flyby at asteroid (21) Lutetia. Planetary and Space Science. Elsevier. DOI: 10.1016/j.pss.2011.08.009.

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Abstract

On July 10, 2010, the ROSETTA spacecraft performed a flyby at asteroid (21) Lutetia at a solar distance of 2.72 AU. The spacecraft�asteroid distance at closest approach was 3120 km. The magnetometers onboard ROSETTA were operating but did not detect any conclusive signature of the asteroid. Any magnetic field signature which could possibly be attributed to the asteroid was below 1nT. Consequently an upper limit for the global magnetic properties of asteroid (21) Lutetia could be derived: maximum dipole moment r1:0 1012 Am2, global maximum magnetization r2:1 103 A=m, specific moment r5:9 107 Am2=kg. Draping of magnetic fields around the nucleus was sought, but evidence for this could not be clearly identified in the data. Plasma simulations taking into account the estimated upper limit of the magnetization and possible outgassing revealed interesting structures very close to the asteroid.The results obtained at Lutetia are contrasted with the results of other asteroid fly by results.

Document Type:Article
Additional Information:Bisher nur online erschienen.
Title:Magnetic field measurements during the ROSETTA flyby at asteroid (21) Lutetia
Authors:
AuthorsInstitution or Email of Authors
Richter, I.Institut für Geophysik und extraterrestrische Physik,Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
Auster, H. U.Institut für Geophysik und extraterrestrische Physik,Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
Glassmeier, K.H.Institut für Geophysik und extraterrestrische Physik,Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
Koenders, C.Institut für Geophysik und extraterrestrische Physik,Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
Carr, C.M.Imperial College London, UK
Motschmann, U.uwe.motschmann@dlr.de
Müller, J.Institut für theoretische Physik, Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
McKenna-Lawlor, S.Space Technology Ireland, National University of Ireland Maynooth, Co. Kildare, Ireland
Date:2011
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1016/j.pss.2011.08.009
Publisher:Elsevier
Series Name:Elsevier- Planetary and Space Science
Status:Published
Keywords:Lutetia Asteroids ROSETTA Magnetic field Draping Solar wind
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 > Asteroids and Comets
Deposited By: Susanne Pieth
Deposited On:11 Jan 2012 07:27
Last Modified:12 Dec 2013 21:30

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