The 14 - 31 metre wide asteroid 2015 AK45 will make a close pass (4.7 lunar distances, 0.0122 AU) travelling at 8.60 km/second, to the Earth-Moon system on the 26th January 2015 @ 21:12 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).