The 36 - 80 metre wide asteroid 2015 DP53 will make a close pass (19.8 LD, 0.0510 AU) travelling at 8.58 km/second, to the Earth-Moon system on the 28th February 2015 @ 10:25 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).