[AZ-Observing] Re: BOLIDE! (photo!)
- From: Wil Milan <wmilan@xxxxxxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 21 Nov 2001 19:05:03 -0700
At 05:49 PM 11/21/2001, you wrote:
>What is the 'contemporary' definition of a bolide? The definition I
>have is:
>"A fireball accompanied by one or more audible explosions, often
>associated with meteorite falls...Many shock waves may be set up if
>considerable fragmentation occurs, causing a rumbling noise which
>follows the first major fragmentation"
>
>This definition does not say anything about color. So far no one has
>said they heard an explosion (or did I just miss it? - someone said they
>heard some sputtering). Is this object really a bolide? Is one or more
>explosions assumed to exist even when not heard if it looks and feels
>like a bolide to experienced observers? Since it was near polaris, my
>guess is that it was somewhere between 30-90 miles from the observer (in
>a straight line), and so maybe it would not be possible to hear an
>explosion.
The photo shows what look like a number of outbursts or explosions along
the burn path, and I presume if one were close enough one would have heard
the explosions.
Wil Milan
http://www.astrophotographer.com/
"The heavens declare the glory of God
And the firmament proclaims His handiwork."
-- Psalm 19:1
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