On the mechanism of the formation and mass growth of solar system bodies at the early stages of evolution

In the present paper, the early evolution of the Solar System with regard to the process of the formation and mass growth of small bodies in protoplanetary rings is considered. This process is modeled with the use of the results that were obtained in the analysis of the libration motions of asteroids. It has been shown that libration centers could occur prior to the formation of the bodies, when the redistribution of gaseous-dust grains occurred in protoplanetary rings. The distribution density of gaseous-dust grains could be similar or equal to that in the Gaussian ring or its analogs for long-period librations. In this case, the bodies can be initially formed and grow in stable libration centers.