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

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Title: A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2.
Authors: Snodgrass, Colin, Tubiana, Cecilia, Vincent, Jean-Baptiste, Sierks, Holger, Hviid, Stubbe, Moissl, Richard, Boehnhardt, Hermann, Barbieri, Cesare, Koschny, Detlef, Lamy, Philippe, Rickman, Hans, Rodrigo, Rafael, Carry, Benoît, Lowry, Stephen C., Laird, Ryan J. M., Weissman, Paul R., Fitzsimmons, Alan, Marchi, Simone
Source: Nature. 10/14/2010, Vol. 467 Issue 7317, p814-816. 3p. 2 Graphs.
Subjects: Asteroids, Astrophysical collisions, Comets, Cosmic dust, Solar radiation, Astronomical observations
Abstract: The peculiar object P/2010 A2 was discovered 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 recognized 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 results. 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. [ABSTRACT FROM AUTHOR]
Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2.
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  Data: <searchLink fieldCode="AR" term="%22Snodgrass%2C+Colin%22">Snodgrass, Colin</searchLink><br /><searchLink fieldCode="AR" term="%22Tubiana%2C+Cecilia%22">Tubiana, Cecilia</searchLink><br /><searchLink fieldCode="AR" term="%22Vincent%2C+Jean-Baptiste%22">Vincent, Jean-Baptiste</searchLink><br /><searchLink fieldCode="AR" term="%22Sierks%2C+Holger%22">Sierks, Holger</searchLink><br /><searchLink fieldCode="AR" term="%22Hviid%2C+Stubbe%22">Hviid, Stubbe</searchLink><br /><searchLink fieldCode="AR" term="%22Moissl%2C+Richard%22">Moissl, Richard</searchLink><br /><searchLink fieldCode="AR" term="%22Boehnhardt%2C+Hermann%22">Boehnhardt, Hermann</searchLink><br /><searchLink fieldCode="AR" term="%22Barbieri%2C+Cesare%22">Barbieri, Cesare</searchLink><br /><searchLink fieldCode="AR" term="%22Koschny%2C+Detlef%22">Koschny, Detlef</searchLink><br /><searchLink fieldCode="AR" term="%22Lamy%2C+Philippe%22">Lamy, Philippe</searchLink><br /><searchLink fieldCode="AR" term="%22Rickman%2C+Hans%22">Rickman, Hans</searchLink><br /><searchLink fieldCode="AR" term="%22Rodrigo%2C+Rafael%22">Rodrigo, Rafael</searchLink><br /><searchLink fieldCode="AR" term="%22Carry%2C+Benoît%22">Carry, Benoît</searchLink><br /><searchLink fieldCode="AR" term="%22Lowry%2C+Stephen+C%2E%22">Lowry, Stephen C.</searchLink><br /><searchLink fieldCode="AR" term="%22Laird%2C+Ryan+J%2E+M%2E%22">Laird, Ryan J. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Weissman%2C+Paul+R%2E%22">Weissman, Paul R.</searchLink><br /><searchLink fieldCode="AR" term="%22Fitzsimmons%2C+Alan%22">Fitzsimmons, Alan</searchLink><br /><searchLink fieldCode="AR" term="%22Marchi%2C+Simone%22">Marchi, Simone</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 10/14/2010, Vol. 467 Issue 7317, p814-816. 3p. 2 Graphs.
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  Data: The peculiar object P/2010 A2 was discovered 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 recognized 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 results. 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. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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