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An intermediate-sized asteroid, categorised as a "potentially hazardous asteroid", will make a close approach to earth on February 4, but has zero chances of colliding with our planet in over the next 100 years, NASA said in a statement. Discovered in January 2002, the asteroid 2002 AJ129 is somewhere between 0.3 miles (0.5 km) and 0.75 miles (1.2 km) across.