Fireball, 31 July 2013
On 31 July 2013 at 03:50 UTC, sensors detected a fireball above 31.8°S, 137.1°E, 29.1 km up. It released energy equal to about 0.22 kilotons of TNT.
The numbers
- Date and time (UTC)
- 31 July 2013, 03:50
- Location
- 31.8°S, 137.1°E
- Height at peak brightness
- 29.1 km
- Speed
- 17.8 km/s (64,080 km/h)
- Light energy radiated
- 7 × 10¹⁰ joules
- Estimated total energy
- 0.22 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 1.5 metres across and weighed around 5.8 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.
Known meteorites nearest this point
- Commodore H6, Australia · 132 km away
- Motpena (b) Chondrite-ung, Australia · 132 km away
- Brachina Brachinite, Australia · 134 km away
Saw a bright fireball yourself? Report what you saw.