The 220 - 490 metre wide asteroid 2002 SZ will make a close pass (41.2 lunar distances, 0.1059 AU), travelling at 19.28 km/second, to the Earth-Moon system on the 12th March, 2014 @ 15:02 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).