[meteorite-list] Bright Streak of Light in Sky ReportedfromSouthern Oregon to Seattle

[Gerald Flaherty]

Darren, Thanks for the aurora color site. Jerry
----- Original Message ----- 
From: "Darren Garrison" <cynapse at charter.net>
To: <meteorite-list at meteoritecentral.com>
Sent: Monday, March 14, 2005 10:39 AM
Subject: Re: [meteorite-list] Bright Streak of Light in Sky 
ReportedfromSouthern Oregon to Seattle


On Mon, 14 Mar 2005 09:05:57 -0500, "ks1u" <ks1u at prodigy.net> wrote:

>The thing which is most interesting to me in these fireball sightings is 
>the
>color of the flame.  The only fireball I saw was an orange/yellow.  Is it
>reasonable to make a guess as to the composition based on flame colors, in
>the way geologists do a flame test?  Or, are there too many other 
>variables?

You also have to take into account, I think, the composition of the 
atmosphere around the meteor.
(Here's a page on the aurora that I googled up, but the info should be fit 
for the ionization of
atmospheric gasses by a meteroid, too 
http://www.wonderquest.com/NorthernLightsOxygen.htm).

FWIW, I've seen plenty of fireballs that are green, and about the same 
apparent size and brightness
as a round from a roman candle.
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