Hydrocode simulations of few Lutetia craters

Details Hydrocode simulations of few Lutetia craters Hydrocode simulations of few Lutetia craters

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..705c&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.705

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Scientific paper

The flyby of the Rosetta spacecraft at the asteroid Lutetia on July 2011 returned images of about half body with the maximum resolution of 60 m/px. A series of features have been observed, among them 2 impact structures are particularly interesting-depth: the largest crater, called Massilia, with its 57 km of diameter, and, nearby, a 24 km crater located within a crater cluster in the Polar region and younger than the others. Both craters have been modeled by means of the iSALE hydrocode, finding that the projectiles had diameters of 3.8 km and 8 km for the 24 and 57 km craters, respectively. The principal aim of our analysis is to determine the projectile dimensions, allowing to set stringent constraints on the collisional history of Lutetia, and its internal structure. In fact, the large dimensions of these craters pose challenging questions concerning the size of the impactor and the frequency of such events.

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