Properties And Distribution Of The Craters Of Asteroid (21) Lutetia From The Rosetta\Osiris Fly-by

Details Properties And Distribution Of The Craters Of Asteroid (21) Lutetia From The Rosetta\Osiris Fly-by Properties And Distribution Of The Craters Of Asteroid (21) Lutetia From The Rosetta\Osiris Fly-by

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.3903b&link_type=abstract

American Astronomical Society, DPS meeting #42, #39.03; Bulletin of the American Astronomical Society, Vol. 42, p.1032

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The Rosetta spacecraft of the European Space Agency performed successfully its second flyby of an asteroid on July 10 2010 on its way to its final target comet 67p/Churyumov-Gerasimenko. Main belt asteroid (21) Lutetia has been observed by the OSIRIS experiment at a distance of 3160 km. The best resolution of the images is about 59 meters per pixel, numerous geological features can be distinguished at this scale. We report on here the physical characteristics and properties of the craters of the largest (100km in diameter) asteroid ever observed in-situ. The values of the diameter and the depth of the craters are essential to determine the age of the surface based on crater counting and the evolution of the surface. Preliminary observations already attest for a highly impacted surface with very large craters. Displacement of regolith is seen on the surface and especially in the walls of craters. The properties of the craters will help understand the history and evolution of this large scale and possible primordial body.

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