Fireball, 18 May 2004
On 18 May 2004 at 11:12 UTC, sensors detected a fireball above 28.1°S, 47.4°W. It released energy equal to about 1 kilotons of TNT.
The numbers
- Date and time (UTC)
- 18 May 2004, 11:12
- Location
- 28.1°S, 47.4°W
- Height at peak brightness
- Not released
- Speed
- Not released
- Light energy radiated
- 39.4 × 10¹⁰ joules
- Estimated total energy
- 1 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 a typical 20 km/s, it was roughly 2.4 metres across and weighed around 21 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
- Blumenau Iron, IVA, Brazil · 209 km away
- Santa Catharina Iron, IAB-ung, Brazil · 241 km away
- Rio Negro L4, Brazil · 325 km away
Saw a bright fireball yourself? Report what you saw.