2010 AL30

is a near-Earth asteroid that was discovered on 10 January 2010 at Grove Creek Observatory, Australia.
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. However, it was determined that it is a near-Earth asteroid. On January 13, 2010 at 1246 UT it passed Earth at, about 1/3 of the distance from the Earth to the Moon.
Based an estimated diameter of, if had entered the Earth's atmosphere, it would have created a meteor air burst equivalent to between 50 kT and 100 kT. The Nagasaki "Fat Man" atom bomb had a yield between 13–18 kT.
It has an uncertainty parameter of 3 and has been observed by radar. Radar observations show the asteroid is elongated and is about 30 meters in diameter. It may be a contact binary.