(meteorobs) Post peak Geminid chunks- some larger?

[James Beauchamp]

Radar scatter here in OKC saw a surge of hits from 3:30 to 6:30 UTC - some at four to five per minute.  Several fireballs caught on the sentinel camera between 3:30 and 4:00 Z.
 
Was a nice little mini-surge...
 
James


--- On Thu, 12/15/11, cookewj at comcast.net <cookewj at comcast.net> wrote:


From: cookewj at comcast.net <cookewj at comcast.net>
Subject: Re: (meteorobs) Post peak Geminid chunks- some larger?
To: "Meteor science and meteor observing" <meteorobs at meteorobs.org>
Date: Thursday, December 15, 2011, 3:14 PM



#yiv166841460 p {margin:0;}


Our fireball cams have recorded 38 multistation Geminids so far this year. If I look at the magnitudes, I find that


Average peak magnitude for 12/13 - 12/14: -2.4 +/- 0.7 (1 standard deviation)
Average peak magnitude for 12/14 - 12/15: -3.2 +/- 1.4 (1 standard deviation)


The averages would indicate that the Geminids were larger last night, but there is considerable scatter.


Regards,
Bill Cooke
NASA Meteoroid Environments Office



From: "Thomas Ashcraft" <ashcraft at heliotown.com>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: Thursday, December 15, 2011 9:38:22 AM
Subject: (meteorobs) Post peak Geminid chunks- some larger?


I wonder if there is a pattern of the occurrence of larger magnitude 
post-peak Geminid fireballs ?

Here is a nice one from last night. Dec 15, 2011 at 0646:01 UT.
http://www.heliotown.com/FBsGem20111215_0646UT_Ashcraft.mp4

See also for examples spaceweather.com archive :  
http://www.spaceweather.com/meteors/gallery_14dec07_page4.htm

Thomas Ashcraft
New Mexico

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