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A. La Spina, A. Dell'Oro, P. Paolicchi (University of Pisa, Italy)
A new numerical model of asteroid collisional evolution and a few preliminary results are presented. The algorithm allows to put into evidence the role of rare major collisional events, those whose probability of occurrence throughout the whole history of the Solar System is about -or less than- unity. It is discussed how these events affect the following collisional evolution and how their long time effects are observable in the mass distribution and in other properties. The method allows estimates of how accurately we are able to reconstruct the initial properties of the Belt as well as to ascertain the occurrence of big events in a recent past (in astronomical sense, i.e. compared to the age of the Solar System).
This work as been funded by MURST-Cofin98, through the Pisa group, leaded by P. Paolicchi.
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