The 28 - 62 metre wide asteroid 2015 DN53 will make a close pass (39.8 LD, 0.1024 AU) travelling at 7.57 km/second, to the Earth-Moon system on the 1st March 2015 @ 09:10 UT ±01:37.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
