The AMS has received over 40 reports so far about a fireball over central Tennessee last night around 8:20 central time. The event was captured by two cameras in the NASA All Sky Fireball Network operated by Bill Cooke of the Marshall Space Flight Center.
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© NASA / Bill Cooke
Super Bolide over Tennessee – December 17th, 2013

The burst from the event was brighter than the full moon.
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© NASA / Bill Cooke
Super Bolide over Tennessee – December 17th, 2013
After analyzing the fireball's brightness, Cooke estimated the bolide to be approximately 12 inches wide and 400 pounds. He also plotted the orbit for the fireball and determined it originated from within the asteroid belt. Based on these two factors, Cooke believes meteorites could have survived to the ground.

Here is a video of the fireball captured by NASA's cameras.



Below are two maps of the fall location and estimated fireball trajectory. One is the trajectory plotted from the fireball reports submitted to the AMS from eye-witnesses. The other trajectory estimate was plotted by NASA using the all sky camera network. This is an excellent example illustrating how valuable and accurate eye witness reports can be. Both estimates are very close to each other.
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Tennessee Fireball Trajectory – December 17th, 2013
Below is an image of the 3D trajectory model computed using the AMS witness reports. This is a new software program we have recently developed that allows us to model the fireball trajectory in 3D and plot the RA/DEC coordinates for its radiant. The vertical red line towards the end of the fireball's track represents the point the fireball went out and entered dark flight. The RA/DEC coordinates computed for this event are: ra: 75.12070251 / declination: 19.38761852
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3D Model of Fireball Trajectory Computed From AMS Witness Reports
Not to be confused, AMS fireball event #3355 has been verified as a unique and different event that occurred around midnight and was witnessed from Tennessee and neighboring states.

If you witnessed either fireball event, please submit an official fireball report.