2010 AL30 is a near-Earth asteroid that was discovered on 10 January 2010 at Grove Creek Observatory, Australia.

[1][3] Italian scientists Ernesto Guido and Giovanni Sostero told RIA Novosti that it had an orbital period of almost exactly one year and might be a spent rocket booster.

Based an estimated diameter of 10–15 m (33–49 ft), if 2010 AL30 had entered the Earth's atmosphere, it would have created a meteor air burst equivalent to between 50 kT and 100 kT (kilotons of TNT).

The Nagasaki "Fat Man" atom bomb had a yield between 13–18 kT.

[1] Radar observations show the asteroid is elongated and is about 30 meters in diameter.