Marshall Eubanks on Nostr: On the mass and size of the Spanish fireball CNEOS says Velocity (km/s) 40.4 Total ...

On the mass and size of the Spanish fireball

CNEOS says

Velocity (km/s) 40.4
Total Radiated Energy (J) 3.7e10
Calculated Total Impact Energy (kt) 0.13

0.13 kt is 5.4 x 10^11 J

1 kg at 40.4 km/s has 8.16 x 10^8 J

So, that CNEOS impact energy corresponds to a mass of 666 kg.

At 2300 kg/m^3 that's 0.4 m radius or 0.8 m diameter.

So, a beachball.