[meteorite-list] One Camera Solution for BC Meteorite Fall

From: Matson, Robert D. <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Mon, 16 May 2011 16:34:06 -0700
Message-ID: <9180F6B27399C541B10663E21C8BDE9201CD8C61_at_0461-its-exmb09.us.saic.com>

Hi Dirk,

These "mono-track" solutions are definitely a good starting point
(especially
when it's all you've got). Esko's prediction(s) are in good agreement
with my
own based on nominal assumptions for the break-up altitude, and meteor
az/el
as measured from Cranbrook. It is fortunate that the Moon is in the
camera
field of view (though obscured a bit by clouds), and that the bolide
terminated
relatively close to the Moon's sky location. (It is very hard to confirm
which
dots in the image are bright stars, and which ones are just hot pixels).

The main uncertainty is the range from Cranbrook to break-up/dark
flight.
This can be constrained somewhat by witness reports from observers that
were southeast or northwest of the track (e.g. the Coeur d'Alene and
Whitefish observers). The flight bearing is also nicely constrained
by observers in Grand Forks, B.C., and Innisfail, Alberta, who each saw
the fireball fall nearly vertically relative to their respective
horizons.

--Rob

-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of
drtanuki
Sent: Monday, May 16, 2011 4:12 PM
To: meteorite-list at meteoritecentral.com; Global Meteor Observing Forum;
Alan Hildebrand; Ed Majden
Subject: [meteorite-list] One Camera Solution for BC Meteorite Fall

Dear List, I have just posted a "one camera solution" calculated by
Esko Lyytinen of Helsinki, Finland for the 14MAY2011 BC, Canada
meteorite fall area. This estimate will be improved once a second camera
video is studied and calculations are made.

http://lunarmeteoritehunters.blogspot.com/2011/05/montana-washington-ida
ho-alberta.html

Best Regards, Dirk Ross...Tokyo
Received on Mon 16 May 2011 07:34:06 PM PDT