(meteorobs) meteorite fall or space garbage?

Roberto G. md6648 at mclink.it
Thu Sep 20 11:47:07 EDT 2007


>  At any rate, if this *were* a meteorite, how big would it have to
>have been, and/or how fast would it have to have been going, to create a
>crater 20 meters wide by 5 meters deep, or roughly 525 cubic
>>meters in volume?

>Crater size calculator:  http://www.lpl.arizona.edu/tekton/crater_c.html
>
>Wes

In the Sikhote Alin case (February 1947), iron meteorite, the biggest
crater was 6 m in deep
and 26.5 m in diameter, the meteorite that create it was all destroied in
the impact and the scientists think that its mass was around 3 Tn, the
biggest piece found was 1.7 Tn found in a crater with littlest side: in 
Kirin
case (1976, China), condrite meteorite, the biggest fragment, 1.7 Tn
created a crater of 6 m in deep but with only around 2 m in diameter
( in reality it wasn't a crater but a near vertical tunnel).
Best greetings.
Roberto Gorelli



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