Greetings, ladies and gents
Thanks to Rob Matson and Jake Schaefer, we've located three additional
video captures of the 09 March fireball over western Ontario. Thanks also to
Dr. Peter Brown at the U. of Western Ontario, whose superb team also analyzed
the event and shared their calculated terminus point with us. Jake interrogated
additional seismometers, and all of these data sources agree that the fireball
terminus was over Michigan near the town of Tecumseh. Radar signatures appear
at that site, and their various characteristics are reasonably consistent with
meteorites. We had identified one in particular as "interesting" early on, but
I was spoofed by some unusual radar returns over Lake Erie. Those returns are
now identified as weather phenomena, and this event did NOT occur over the
lake. They're unusual in that they are apparently small clouds with significant
internal turbulence, and are not the sort of thing I was expecting to see at
night over a cold landmass. But now that we've seen them I
won't be fooled by them again.
The radar returns over the actual fireball terminus are reasonably
convincing - they appear in a straight line that follows the prevailing winds,
appear at the right time and place, etc. But they are quite weak, to the point
that if they are meteorites then they amount to a very small total mass. We've
posted this information on the GA web page but have not done the dark flight
modeling. If anyone wants to go search this event let me know and I'll perform
the strewn field estimation.
Cheers,
Marc Fries
Galactic Analytics LLC
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