The 27 - 59 metre wide asteroid 2014 DW110 will make a close pass (25.3 lunar distances, 0.0649 AU), travelling at 6.40 km/second, to the Earth-Moon system on the 21st March 2014 @ 00:55 UT ±00:03.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2014 03 20 12 08.10 +17 26.6 0.0651 1.058 162.7 16.3 20.1 2014 03 21 12 21.73 +17 47.6 0.0650 1.058 161.4 17.5 20.1 2014 03 22 12 35.39 +18 04.3 0.0651 1.058 159.9 18.8 20.2 2014 03 23 12 48.97 +18 16.6 0.0654 1.058 158.4 20.3 20.2 2014 03 24 13 02.34 +18 24.4 0.0660 1.058 156.7 21.9 20.3 2014 03 25 13 15.40 +18 27.9 0.0668 1.058 155.0 23.5 20.4 2014 03 26 13 28.06 +18 27.3 0.0678 1.059 153.3 25.0 20.4 2014 03 27 13 40.25 +18 22.9 0.0691 1.059 151.7 26.5 20.5 2014 03 28 13 51.90 +18 15.2 0.0705 1.060 150.1 28.0 20.6 2014 03 29 14 02.97 +18 04.5 0.0721 1.061 148.7 29.3 20.7 2014 03 30 14 13.45 +17 51.4 0.0739 1.062 147.3 30.6 20.8 2014 03 31 14 23.31 +17 36.2 0.0758 1.063 146.0 31.7 20.9