The 110 - 240 metre wide asteroid 2000 PN8 will make a close pass (31.1 lunar distances, 0.0799 AU), travelling at 12.78 km/second, to the Earth-Moon system on the 10th August 2014 @ 21:53 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).
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2014 08 09 20 38 59.0 +20 59 33 0.08114 1.0790 142.0 35.3 18.2 2014 08 10 20 43 00.9 +15 54 26 0.08016 1.0820 147.2 30.5 18.0 2014 08 11 20 46 55.8 +10 43 04 0.07987 1.0850 152.5 25.6 17.9 2014 08 12 20 50 43.7 +05 31 03 0.08029 1.0880 157.6 20.8 17.7 2014 08 13 20 54 24.6 +00 24 03 0.08141 1.0911 162.5 16.2 17.6 2014 08 14 20 57 58.6 -04 32 45 0.08322 1.0942 166.8 12.2 17.5 2014 08 15 21 01 25.9 -09 15 06 0.08568 1.0973 170.0 9.3 17.5 2014 08 16 21 04 46.5 -13 39 58 0.08874 1.1005 171.2 8.1 17.5 2014 08 17 21 08 00.6 -17 45 33 0.09235 1.1036 170.3 8.9 17.6 2014 08 18 21 11 08.5 -21 31 08 0.09645 1.1068 167.9 11.1 17.8 2014 08 19 21 14 10.3 -24 56 52 0.1010 1.1100 165.0 13.6 18.0 2014 08 20 21 17 06.2 -28 03 30 0.1059 1.1132 162.1 16.2 18.2