The 280 - 620 metre wide asteroid 2007 MK13 will make a close pass (74.5 lunar distances, 0.1914 AU), travelling at 14.23 km/second, to the Earth-Moon system on the 27th December, 2010 @ 01:23 UT.
The 290 - 650 metre wide asteroid 2007 MK13 will make a close pass (22.4 lunar distances, 0.0576 AU), travelling at 10.76 km/second, to the Earth-Moon system on the 24th December, 2009.