Hello List, Jeff inquired:
"I keep hearing lines like 'Chelyabinsk was the largest meteoroid strike since the Tunguska event'. What about Sikhote-Alin? Does anyone know if there are any accurate modellings on that fall in terms of size, weight and energy?" Here's what was able to cull from my sources: Tunguska megatons of TNT: 10-40 (probably 15) mass (tons): 7 x 10^6 (if cometary) mass (tons): 3.5 x 10^4 (if stony) diameter (m): > 160 (if cometary) diameter (m): > 60 (if stony) speed (km/s): ca. 18 (?)+ + Sekanina's opinion: from the breakup height the object was not traveling much more than 11 km/s when it entered the atmosphere Chelyabinsk megatons of TNT: ca. 0.6 mass (tons): 11,000 diameter (m): 18 speed (km/s): 19 Sikhote-Alin megatons of TNT: ca. 0.0035-0.013 mass (tons): 200-500 diameter (m): 600* speed (km/s): 14 * apparent diameter of the bolide with its luminous envelope Cheers, Bernd ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
