NEO) 2010 AL30 silently moved across the night sky. Its path brought it to an altitude of about 122,000 km, which is one third of the distance to the Moon. 2010 AL30 is an asteroid approximately 10 to 15 m across. As shown above, Patrick Wiggins followed its passage using a 35 cm telescope and CCD camera. 2010 AL30 is estimated to be part of a NEO population of several thousand similar objects. On average, one 10-15 m diameter asteroid passes within one lunar distance of the Earth about once a week. If 2010 AL30 had entered the Earth's atmosphere, it would have created an air burst equivalent to between 50 kT and 100 kT (kilotons of TNT). The Nagasaki "Fat Man" atom bomb had a yield between 13-18kT...............
Click on the link below to read the rest of the article and see the video of the object.
Click Here(Near Earth Object)