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Re: Fireballs through the clouds (was Re: (meteorobs) Comets off)
Dear Mister Lew Gramer!
Very thankful for the beautiful explanations (as always:)
Explaining better... there were just some rare holes in the sky, he was 99%
covered with cumulonimbus. The Moon was in its fifth day after the full
phase (she was only noticed by a weak and diffuse brightness contemplated
behind the clouds, and the meteor in subject appeared very quickly under
(below) of the clouds and there was not any reference star so that I could
calculate the exact magnitude of the meteor (I never saw a meteor that could
be classified with the mag. of the Sun). THE meteor was very fast - about
one second, crossing about of less than 10 sky degrees, of white color.
Well... it is that!
Thank you for its gracefulness!
Celestial hugs with clean skies!
Rosely - Br.
Mococa - lat. 21.27.54 S - Long. 47.00.21 W
gregio@dglnet.com.br
http://www.constelacoes.hpg.com.br
http://membro.intermega.com.br/rgregio/
http://construindobjetos.na-webdot net
http://www.geocities.com/alnitack_br/
http://membro.intermega.com.br/fenomenos/
----- Original Message -----
From: "Lew Gramer" <dedalus@latrade.com>
To: "Meteor Observing Mailing List" <meteorobs@atmob.org>
Sent: Monday, February 04, 2002 7:50 PM
Subject: Fireballs through the clouds (was Re: (meteorobs) Comets off)
>
> >Amateur's question: Even with highly cloudy sky, it would be possible a
fast
> >meteor is sighted with shine around -5.0 to -4.0 mag. below the clouds?
In
> >this case, could this meteor be classified as a meteor?
>
> Rosely, do you mean, "Is it possible to see a meteor of magnitude -4
or -5,
> THROUGH (behind) the clouds..."? If you do, the answer is decidedly "yes"!
> Especially in the case of cirrus (high ice-cloud) overcast, it is possible
> to see fireballs quite well. I have certainly done it, anyway!
>
> Now, I assume you don't literally mean, "Is it possible to see a fireball
IN
> FRONT OF clouds?" The answer then would be, "Only if the fireball were
from
> a large enough object to strike earth with celestial velocity"... In other
> words, only if a fireball were comparable to the *sun* in magnitude, I
think!
>
> Remember, even cirrus (high) clouds are less than 15 miles up - and the
"dark
> flight" of even a fairly bright fireball usually begins much higher than
that.
>
> Take care,
> Lew Gramer
>
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