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(meteorobs) RE: [Fwd: Fw: RASC List: Fireball Report]

A great description of the phenomena known as "electrophonic sound"!
-----SNIP!----
>sound continued until object's breakup; immediately after breakup (1/4 1to
>1/10th second) there was a faint crackling sound, like firecrackers off in
>the distance.  The fact of this sound so closely following the object's
>breakup.....
------SNIP!-------
Along with the low elevation angle and slow speed, it leads me to think that
this observer was too far away to hear even a sonic boom from any of the
objects surviving the breakup.  It may be worth checking to see if anybody
in the St. Thomas or Chatham or even Windsor area reported hearing a sonic
boom.

Hey, wasn't there a fireball sighting in Windsor, ON. this time of year two
or three years ago?

Thanks for the forward Elton.
Bob V.


-----Original Message-----
From: E. L. Jones [mailto:jonee@epixdot net]
Sent: Wednesday, June 30, 1999 8:11 AM
To: Meteorite List
Subject: [Fwd: Fw: RASC List: Fireball Report]


Another Quality Fireball report FYI.

The best I have seen lately and looks like a meteorite(s)may have landed!

Elton Jones

-------- Original Message --------
From: Robert A.Sears <robertsears99@hotmail.com>
Subject: RASC List: Fireball Report

>Note: this report was submitted to rhawkes@mtadot ca (June 26th)&
>dlemay@quebectel.com (June 29), as per The RASC's Observer's Handbook
>instructions. Also was sent to Colin Haig, President of Hamilton Centre
>RASC. I have been attempting to send this out to rasclist since June 27/99,
>but have had problems w/my server. Sorry you all couldn't read it earlier.
>Has anyone else seen this event? If so, please e-mail me at
>robertsears99@hotmail.com.  Thank you.
>
>6/26/99 3:20 AM
>Witnessed by:
>Robert A. Sears (Hamilton Centre RASC)
>#202-2445 Woodward Ave.
>Burlington, ON
>L7R 1V3
>(905) 637-3368 (Call if you have any questions and please leave message)
>Lat 43 degrees 19' N LONG 79 degrees, 40' W
>
>Time seen 3:20 AM local time, object first appeared at 190 degrees SSE
>travelling west and terminated at 220 degrees SSW, the point of breakup.
>Object first seen at about 40 degrees above horizon, descending to 30
>degrees at time of breakup. Est. magnitude -8 to -10 3/4 brightness of full
>moon.  Length of event was 1 to 1 1/2 seconds.  I think I witnessed the
>entire event from atmospheric entry to object's breakup. I think it may
have
>been from S Aquarid meteor stream, as it appeared within 25-30 degrees of
>radiant. It appeared to pass through Sagittarius.
>
>                          Qualitative Description
>
>Fireball was, at first, a whitish-green color (the first third of the
>train), then it rapidly turned a bright whitish-green, and lastly there was
>a breakup of the object, somewhat resembling an explosion. The fireball
>broke up into from 6-10 fragments which glowed bright green with a light
>electric blue component (electric blue was like a nimbus, almost like an
>electric discharge).  Also visible was a little red coloration. Apparent
>size of explosion was about thumb-sized and -shaped.  There were minimum 6
>fragments visible, maybe as many as ten.  There was also a sound associated
>with this event.  It started as a "woof" sort of a sound, kind of like the
>sound made by a propane BBQ being lit after a buildup of propane.  This
>sound continued until object's breakup; immediately after breakup (1/4 1to
>1/10th second) there was a faint crackling sound, like firecrackers off in
>the distance.  The fact of this sound so closely following the object's
>breakup leads me to believe that this object was very close to me when it
>disintegrated. I suppose it is possible that some of the object's material
>could have survived breakup to hit the ground, as the object's speed was
>relatively slow.  No train was observed.  On a personal note, I was
>completely blown away by this experience. It was beautiful and
>awe-inspiring, a (hopefully not) once-in-a-lifetime experience!!
Absolutely
>stunning.  I hope someone else saw this! Could you please send me an e-mail
>confirming receipt of this report? I have been having trouble sending
e-mail
>with my account. Thank you.
>
>Clear skies
>Robert A. Sears
>
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