The 330 - 750 metre wide asteroid 1999 XM141 will make a close pass (59.9 LD, 0.1539 AU) travelling at 12.92 km/second, to the Earth-Moon system on the 27th May 2015 @ 10:15 UT ±00:01.
The 400 - 900 metre wide asteroid 1999 XM141 will make a close pass (73.4 lunar distances, 0.1887 AU), travelling at 18.04 km/second, to the Earth-Moon system on the 16th December, 2010 @ 11:35 UT.