The 88 - 200 metre wide asteroid 1999 FN19 will make a close pass (9.65 lunar distances, 0.02480 AU), travelling at 5.70 km/second, to the Earth on the 7th May 2018 @ 13:57 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).