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One of the main bottleneck in assessing the accuracy of Mars orbit is theunknown value of the asteroids in the Main Asteroid Belt. Nowadays a modelingwith 343 asteroids as point masses is used, with the relative masses fitted toobservational data. In the current work we propose an innovative methodology toreduce the number of asteroids implemented as point masses, thus reducing thenumber of parameters to be fitted, without a significant degradation of thepostfit residuals.

Boosting decision trees for Main Belt Asteroid selection in planetary ephemerides: an alternative model