The determination of the trajectory of Chelyabinsk bolide according to   the records of the drive cams and the simulation of the fragments motion in   the atmosphere
  The determination of the trajectory of Chelyabinsk bolide according to the video records is performed and the results of the simulation of the fragment motion in the atmosphere are showed including its state at that moment. The methods of distortion compensation and adjusting of the video images with the calibration images and the iterative method of the trajectory improvement by azimuths and altitudes are developed. These methods allow improving the precision of the trajectory tracing to the hundreds of meters in space and to the tens of arc minutes in the angular measure. 
G.V. Ionov
astro-ph.EP astro-ph.IM