The 9 - 21 metre wide asteroid 2009 WK1 will make a close pass (43.8 lunar distances, 0.1126 AU), travelling at 7.41 km/second, to the Earth-Moon system on the 26th December, 2011 @ 22:36 UT ±2 days 06:58.
Orbital elements: 2009 WK1 Earth MOID = 0.0302 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 16.94972 (2000.0) P Q n 0.48727794 Peri. 195.71272 +0.35423980 -0.93402475 a 1.5993796 Node 233.56221 +0.86402370 +0.34569890 e 0.3660936 Incl. 3.27470 +0.35773902 +0.08994462 P 2.02 H 27.1 G 0.15 U 6
The 10 - 22 metre wide asteroid 2009 WK1 will make a close pass (12.0 Lunar Distances, 0.0307 AU), travelling at 4.85 km/s, to the Earth-Moon system on the 22nd November, 2009.