Abstract
We discuss extended model of planetary system formation. Gravitational collapse of protoplanets leads to the formation of planets and their satellite systems. We consider the hypothesis of a two-stage mechanism of formation of satellite system. Small satellites are formed from the remnants of a collapsing protoplanetary cloud, and large satellites are formed by capturing other relatively small protoplanets. In this paper we study the process of formation of the initial gas-dust cloud, whose evolution leads to the formation of a protoplanetary, and then a planetary system. The justification of the extended model is carried out by numerical simulation. Stable for some time configurations are obtained as a result of interaction of the oncoming mass flows: the spatial collisionless matter takes a lens-like shape, and the planar dissipative system tends to form two gravitating rotating bodies, like the binary stars.
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