ИСТИНА

From the observations, the asteroid Chariklo (and possibly Chiron) have outer rings. The purpose of this paper consists in constructing the equilibrium models of these asteroids and developing the kinetic mechanism of evolution of their rings [1]. We have specified for Chariklo the density the mass and the average radius . Consistent estimation of the parameters of Chiron with the average radius gives the density and the mass The rings are modeled by circular gravitating toruses consisting of the small rock-ice particles that orbit the asteroid. The method does not imply the presence of hidden satellites near to asteroid, and the equilibrium of rings is determined by small velocity dispersion and gravity of particles. The problem of calculating the gravitational energy of the torus is solved. By using the energy, it is possible to express the mass of the ring through the mass of asteroid For the Chariklo’s inner (outer) ring the mass ratio is equal to and for Chiron respectively. The ratio of mass of the rings is equal to (Chariklo) and (Chiron). The rings of both asteroids are located out of the Roche limit. We studied in detail the kinetics of particle motion in the rings. The dissipation rate equation for the rings is derived. From this equation a surprising result follows: the time of energy dissipation (the time of evolution of rings) is only years that to astronomical measures is very short time scale. We present the arguments supporting the idea that these rings in the future can become satellites of the asteroids.