Fireball, 30 April 2013
On 30 April 2013 at 08:40 UTC, sensors detected a fireball above 35.5°N, 30.7°W, 21.2 km up. It released energy equal to about 9.8 kilotons of TNT.
The numbers
- Date and time (UTC)
- 30 April 2013, 08:40
- Location
- 35.5°N, 30.7°W
- Height at peak brightness
- 21.2 km
- Speed
- 12.1 km/s (43,560 km/h)
- Light energy radiated
- 511 × 10¹⁰ joules
- Estimated total energy
- 9.8 kilotons of TNT
What does that mean?
That is a large burst by fireball standards: the Chelyabinsk fireball of 2013 released about 440 kilotons. If the object was stony rock entering at this speed, it was roughly 7.1 metres across and weighed around 560 tonnes.
It penetrated deep into the atmosphere, which makes it more likely that fragments reached the ground as meteorites. About 70% of Earth is ocean, so most fireballs like this fall into the sea.
Saw a bright fireball yourself? Report what you saw.