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High Confidence Meteorite Fall in Northeast Ohio
08.17.11
 
Composite of Lake Erie fireball meteor, as seen by the Orangeville, Ontario camera Composite of Lake Erie fireball meteor, as seen by the Orangeville, Ontario camera. (University of Western Ontario)

Darkflight impact locations of Lake Erie fireball meteor Darkflight impact locations of Lake Erie fireball meteor. (Google)

Segment from KCLE radar with the Lake Erie meteor begin and end points labeled. Segment from KCLE radar with the Lake Erie meteor begin and end points labeled. (KCLE in Cleveland)
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On August 8 at 1:22 Eastern Daylight Time, 4 all sky cameras belonging to the Southern Ontario Meteor Network detected a fireball entering the atmosphere 54 miles above Lake Erie (80.944 W, 41.945 N), moving SSE at 25 km/s (55,900 mph). Decelerating rapidly, the meteor was last tracked north of Gustavus (80.667 W, 41.411 N), moving at approximately 10 km/s. Altitude at this point was 38 km (23.6 miles).

There is high confidence that this meteor produced meteorites, based on the following indicators:
  1. Deep atmospheric penetration (last tracked to 38 km altitude before it passed out of camera field of fiew. It certainly went deeper)
  2. Significant deceleration
  3. There was a doppler radar signature (KCLE) 2-3 minutes after the event, which indicates debris falling through the atmosphere
Darkflight calculations yield results consistent with the dopper returns. Calculated impact locations as a function of mass are:

1 gram: 80.5027 W, 41.3824 N
10 grams: 80.5163 W, 41.3379 N
100 grams: 80.5158 W, 41.2910 N
1 kilogram: 80.5074 W, 41.2440 N

Brightness/infrasound measurements put the meteor mass in the 10 kilogram range. Fragments are anticipated to be less than 100 grams in mass.

It is requested that anyone finding fragments of this meteorite note the location of the find and contact:

NASA Meteoroid Environments Office
Marshall Space Flight Center
William.J.Cooke@nasa.gov


Please observe the wishes and rights of all property owners!




Watch three alternate all sky camera views of this event:

Orangeville, Ontario View:

› View linking/embedding version

Tavistock, Ontario View:

› View linking/embedding version

Mcmaster, Ontario View:

› View linking/embedding version
 
 


NASA Media Contact:
Janet Anderson, 256-544-0034
NASA Marshall Space Flight Center, Ala.
Janet.L.Anderson@nasa.gov