Quote:
Originally Posted by George
It doesn't seem to be remotely accurate as to the impact energy. A 1/2 mile asteroid impact energy will be vastly more than 1000 tonnes of TNT. One calculator shows ~150,000 MegaTon.
I am not sure about their devastation area calculations.
Nevertheless, it is an amazing find if the object is from 700BC!! I hope so.
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I've heard a rough rule of thumb that you should multiple the asteroid diameter by X10 to get crater diameter, in this case it would be about 5 miles in diameter crater