Fireball record

Fireball, 17 August 2010

On 17 August 2010 at 04:19 UTC, sensors detected a fireball above 20.7°N, 114.3°W, 33.3 km up. It released energy equal to about 0.077 kilotons of TNT.

The numbers

Date and time (UTC)
17 August 2010, 04:19
Location
20.7°N, 114.3°W
Height at peak brightness
33.3 km
Speed
Not released
Light energy radiated
2.13 × 10¹⁰ joules
Estimated total energy
0.077 kilotons of TNT

What does that mean?

That is a small burst by fireball standards: the Chelyabinsk fireball of 2013 released about 440 kilotons. If the object was stony rock entering at a typical 20 km/s, it was roughly 1 metres across and weighed around 1.6 tonnes.

Most objects of this kind break up and burn away high in the atmosphere, but larger ones can drop small meteorites. About 70% of Earth is ocean, so most fireballs like this fall into the sea.

Known meteorites nearest this point

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