The migration of planetesimals during the last stages of giant planet accumulation

The migration and accumulation of bodies from giant planet feeding zones after the formation of the main part of the mass of these planets are studied. These investigations are based on computer simulation results for the evolution of spatial disks which initially consisted of nearly formed planets and hundreds of identical bodies in the zones of Uranus and Neptune. It is shown that the total mass of the bodies reaching the asteroid zone from the giant planet zone could have reached several tens of earth masses. The trans-Neptunian belt could have formed during the accumulation of the giant planets. The evolution of the orbits of the planets as they encountered the planetesimals is examined.