Fireball, 22 April 2019
On 22 April 2019 at 21:42 UTC, sensors detected a fireball above 48.8°S, 67.8°E, 33.3 km up. It released energy equal to about 0.37 kilotons of TNT.
The numbers
- Date and time (UTC)
- 22 April 2019, 21:42
- Location
- 48.8°S, 67.8°E
- Height at peak brightness
- 33.3 km
- Speed
- 11.4 km/s (41,040 km/h)
- Light energy radiated
- 12.4 × 10¹⁰ joules
- Estimated total energy
- 0.37 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 this speed, it was roughly 2.5 metres across and weighed around 24 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.
Saw a bright fireball yourself? Report what you saw.