Fireball, 17 February 2008
On 17 February 2008 at 12:19 UTC, sensors detected a fireball above 74.9°N, 73.4°W, 40.4 km up. It released energy equal to about 0.33 kilotons of TNT.
The numbers
- Date and time (UTC)
- 17 February 2008, 12:19
- Location
- 74.9°N, 73.4°W
- Height at peak brightness
- 40.4 km
- Speed
- 13.9 km/s (50,040 km/h)
- Light energy radiated
- 11 × 10¹⁰ joules
- Estimated total energy
- 0.33 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 2.1 metres across and weighed around 14 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
- Thule Iron, IIIAB, Greenland · 242 km away
Saw a bright fireball yourself? Report what you saw.