The 53 - 120 metre wide asteroid 2015 AZ43 will make a close pass (7.7 LD, 0.0197 AU) travelling at 7.22 km/second, to the Earth-Moon system on the 15th February 2015 @ 12:35 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).