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Chelyabinsk event as an astronomical phenomenon

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Abstract

The fall of a meteorite near the town of Chelyabinsk is considered from the viewpoint of astronomy, and the major witness facts and entry characteristics (including the measured entry velocity and the height of the explosion) are analyzed. The aerodynamic phenomena that accompanied the entry of the meteorite in the atmosphere at an ultrasonic velocity and the origin of a shock wave that induced damage on the Earth’s surface are analyzed. The paper also reports the estimated frequency of the falls of celestial bodies depending on their size, and consequences of collisions of these bodies with the Earth. It is emphasized that studies of small bodies in the Solar System can provide insight into the origin of the protoplanetary disk and the processes that produced the planets. The studies of small bodies, such as the Chelyabinsk meteorite, are directly related to the problem of asteroid and comet impact hazard (ACIH). The paper reports the sizes of potentially hazardous celestial bodies whose monitoring requires the deployment of a network of specialized telescopes on the Earth to mitigate ACH and a system of space-based systems for the identification and monitoring of such bodies in near space.

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Authors and Affiliations

  1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991, Russia

    M. Ya. Marov

  2. Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya ul. 48, Moscow, 109017, Russia

    B. M. Shustov

Authors
  1. M. Ya. Marov
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  2. B. M. Shustov
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Correspondence to M. Ya. Marov.

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Original Russian Text © M.Ya. Marov, B.M. Shustov, 2013, published in Geokhimiya, 2013, Vol. 51, No. 7, pp. 647–649.

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Marov, M.Y., Shustov, B.M. Chelyabinsk event as an astronomical phenomenon. Geochem. Int. 51, 587–589 (2013). https://doi.org/10.1134/S0016702913070124

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  • DOI: https://doi.org/10.1134/S0016702913070124

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