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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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.
|Title:||A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2|
|Journal or Publication Title:||Nature|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 814-816|
|Keywords:||Asteroid P/2010 A2|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|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)|
|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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