Long—Term Dynamics of the Tunguska Cosmic Body

We performed a detailed analysis of the large amount of the literature on the Tunguska event in order to determine a useful sample of observed data. Then from a selected range of meaningful atmospheric trajectories, we computed a set of 886 possible TCB (Tunguska Cosmic Body) orbits, which were used to estimate the probabilities of the possible origin of the TCB. According to the obtained results, the probability of an asteroidal origin of the TCB is much higher i.e. 83% than the cometary one i.e. 17%.