The 880 - 2000 metre wide asteroid 2002 JC will make a close pass (48.7 lunar distances, 0.1251 AU), travelling at 23.95 km/second, to the Earth-Moon system on the 24th May 2014 @ 08:44 UT ±00:01.
The 1000 - 2300 metre wide asteroid 2002 JC will make a close pass (57.5 lunar distances, 0.1478 AU), travelling at 20.88 km/second, to the Earth-Moon system on the 1st June, 2011 @ 05:40 UT ±00:01.