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A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2

Colin, M. and Tubiana, Cecilia and Vincent, Jean-Baptiste and Sierks, Holger and Hviid, Stubbe and Moissl, Richard and Boehnhardt, Herrmann and Barbieri, Cesare and Koschny, Detlef and Lamy, Philippe and Rickman, Hans and Rodrigo, Rafael and Carry, Benoit and Lowry, Stephen C. and Laird, Ryan J. M. and Weissman, Paul R. and Fitzsimmons, Alan and Marchi, Simone and Hearn, M. A. and Angrilli, F. and Barucci, A. and Bertaux, J.-L. and Cremonese, G. and Da Deppo, V. and Davidson, B. and Debei, S. and De Cecco, M. and Fornasier, S and Gutierrez, P. and IP, W.-H. and Keller, H. U. and Knollenberg, J. and Kramm, J. R. and Kuehrt, E. and Kueppers, M. and Lara, L. M. and Lazzarin, M. and Lopez-Moreno, J. J. and Marzari, F. and Michalik, H. and Naletto, G. and Sabau, L. and Thomas, N. and Wenzel, K.-P. (2010) A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2. Nature, 467 (7317), pp. 814-816. DOI: 10.1038/nature09453.

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Abstract

The peculiar object P/2010 A2 was discovered1 in January 2010 and given a cometary designation because of the presence of a trail of material, although there was no central condensation or coma. The appearance of this object, in an asteroidal orbit (small eccentricity and inclination) in the inner main asteroid belt attracted attention as a potential new member of the recently recognized2 class of main-belt comets. If confirmed, this new object would expand the range in heliocentric distance over which main-belt comets are found. Here we report observations of P/2010 A2 by the Rosetta spacecraft. We conclude that the trail arose from a single event, rather than a period of cometary activity, in agreement with independent results3. The trail is made up of relatively large particles of millimetre to centimetre size that remain close to the parent asteroid. The shape of the trail can be explained by an initial impact ejecting large clumps of debris that disintegrated and dispersed almost immediately. We determine that this was an asteroid collision that occurred around 10 February 2009.

Document Type:Article
Title:A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2
Authors:
AuthorsInstitution or Email of Authors
Colin, M.MPI für Sonnensystemforschung, Katlenburg-Lindau, Germany
Tubiana, CeciliaMPI für Sonnensystemforschung, Katlenburg-Lindau, Germany
Vincent, Jean-BaptisteMPI für Sonnensystemforschung
Sierks, HolgerMPI für Sonnensystemforschung
Hviid, StubbeMPI für Sonnensystemforschung
Moissl, RichardMPI für Sonnensystemforschung
Boehnhardt, HerrmannMPI für Sonnensystemforschung
Barbieri, CesareUniversity of Padua, Dept. of Astronomy, Padova, Italy
Koschny, DetlefResearch and Scientific Support Dept, ESA, Noordwik, The Netherlands
Lamy, PhilippeLaboratoire d'Astrophysique de Marseille, Marseille, France
Rickman, HansUppsala Univ., Dept. of Astronomy and Space Physics, Uppsala, Sweden
Rodrigo, RafaelInstituto de Astrofisica de Andalucia, CSIC, Granada, Spain
Carry, BenoitLESIA Observatoire de Paris-Meudon, Meudon, France
Lowry, Stephen C. Centre for Astrophysics and Planetary Science, Univ. of Kent, Canterbury, UK
Laird, Ryan J. M. Centre for Astrophysics and Planetary Science, Univ. of Kent, Canterbury, UK
Weissman, Paul R.JPL, Pasadena, USA
Fitzsimmons, AlanAstrophysics Research Centre, Queen's univ. Belfast, UK
Marchi, SimoneUniversity of Padua, Dept. of Astronomy, Padova, Italy
Hearn, M. A.Univ. of Maryland, Dept. of Astronomy, Maryland, USA
Angrilli, F.Dept. of Mechanical Engineering, Univ. of Padua, Padua, Italy
Barucci, A.LESIA Observatoire de Paris-Meudon, Meudon, France
Bertaux, J.-L.LATMOS, CNRS/UVSQ/IPSL, Guyancourt, France
Cremonese, G.INAF-Osservatorio Astronomico di Padova, Padova, Italy
Da Deppo, V.CNR-IFN UOS Padova LUXOR, Padova, Italy
Davidson, B.Uppsala Univ., Dept. of Astronomy and Space Physics, Uppsala, Sweden
Debei, S.Dept. of Mechanical Engineering, Univ. of Padua, Padua, Italy
De Cecco, M. UNITN, Univ. di Trento, Trento, Italy
Fornasier, SLESIA Observatoire de Paris-Meudon, Meudon, France
Gutierrez, P.Instituto de Astrofisica de Andalucia, CSIC, Granada, Spain
IP, W.-H.Nationa Central Univ., Institute of Astronomy, Chung-Li, Taiwan
Keller, H. U.TU Braunschweig, Germany
Knollenberg, J.joerg.knollenberg@dlr.de
Kramm, J. R.MPI für Sonnensystemforschung, Katlenburg-Lindau, Germany
Kuehrt, E.ekkehard.kuehrt@dlr.de
Kueppers, M.ESA-ESAC, Camino bajo del Castillo, Madrid, Spain
Lara, L. M. Instituto de Astrofisica de Andalucia, CSIC, Granada, Spain
Lazzarin, M.University of Padua, Dept. of Astronomy, Padova, Italy
Lopez-Moreno, J. J.Instituto de Astrofisica de Andalucia, CSIC, Granada, Spain
Marzari, F.Univ. of Padova, Dept. of Physics, Padova, Italy
Michalik, H.TU Braunschweig, Germany
Naletto, G.Univ. of Padova, Dept. of Information Engineering, Padova, Italy
Sabau, L.Instituto National de Tecnica Aerospacial, Madrid, Spain
Thomas, N.Univ. Beern, Physikalisches Institut, Bern, Switzerland
Wenzel, K.-P. Research and Scientific Support Dept, ESA, Noordwik, The Netherlands
Date:2010
Journal or Publication Title:Nature
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:467
DOI:10.1038/nature09453
Page Range:pp. 814-816
Status:Published
Keywords:Asteroid P/2010 A2
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 - Projekt AsteroidenFinder - Instrumente (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Laura-Maria Brumm
Deposited On:03 Jan 2011 20:16
Last Modified:26 Mar 2013 13:22

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