(meteorobs) Here we go again -- media misinformation concerning Russian meteor event

[Kim Youmans]

"As seen from the viewpoint of approaching
2012 DA14 fragments, 55 N is the "backside" of the Earth.'

That's what I meant by "timing."  Thanks Marco, I knew you'd set me straight!


----- Original Message ----
From: Bruce McCurdy <bmccurdy at shaw.ca>
To: marco.langbroek at online.nl; Meteor science and meteor observing 
<meteorobs at meteorobs.org>
Sent: Fri, February 15, 2013 9:30:16 AM
Subject: Re: (meteorobs) Here we go again -- media misinformation concerning 
Russian meteor event

All these reports of damage to multiple buildings in several cities has me
wondering, was this a Tunguska-style airburst-> shockwave event  as opposed
to a meteorite strike? 

I too cringe every time I hear "meteor shower". Will do my best to take the
"dis" out of "information" in my small corner of the world today. Was
already planning to talk about asteroids today what with 2012 DA14! 

Bruce
*****

-----Original Message-----
From: meteorobs-bounces at meteorobs.org
[mailto:meteorobs-bounces at meteorobs.org] On Behalf Of Marco Langbroek
Sent: Friday, February 15, 2013 7:07 AM
To: Meteor science and meteor observing
Subject: Re: (meteorobs) Here we go again -- media misinformation concerning
Russian meteor event

Op 15-2-2013 14:55, Kim Youmans schreef:

> Seems also the media was quick to dismiss this as unrelated to today's 
> asteroid flyby, which it probably most certainly was but unless the 
> timing was completely off, I doubt anyone has had time to calculate an
orbit for the Russian meteor.

In this case, no trajectory for the Russian bolide was needed to come to
that conclusion.

With a geocentric radiant at declination -81 degrees for the 2012 DA14
orbit, it is impossible for fragments from an associated "stream" to impact
at a latitude as high as 55 North. As seen from the viewpoint of approaching
2012 DA14 fragments, 55 N is the "backside" of the Earth.

- Marco

-----
Dr Marco (asteroid 183294) Langbroek
Dutch Meteor Society (DMS)

e-mail: dms at marcolangbroek.nl
http://www.dmsweb.org
http://www.marcolangbroek.nl
-----



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