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Originally posted by candcantiques
reply to post by nineix
My apologies. Thats the one I meant. I thought it was Chinese. I am not sure what a standard bolide is. Do they give off colors like that? Never saw the colors before.
I don't believe there is much evidence to support the idea that meteor
color (as seen with the eye) has much relationship to the meteoroid
composition- at least, when we are talking about fireballs. There is good evidence, however, that the color is mainly the from ionization of atmospheric gas- especially oxygen. I've personally collected images of
several bright fireballs through a 501 nm narrow band (6 nm) filter,
which argues for a very strong [OIII] component to the light.
FWIW, a quick review of the meteor reports (nearly all fireballs) I've
received in the last 11 years shows this:
9110 reports total
3735 (41%) report some sort of color
3069 (82% of those reporting color) report some shade of green
I've long since concluded that bright fireballs are almost always green.
The exceptional cases are those which are not (and these are almost
always reported as white).
The only other color that tends to show up in witness descriptions is
red/orange, and a close look reveals that this is almost always at the
end of the path, when it is easily explained as the output of a cooling
Chris L Peterson