Update: The 26 - 58 metre wide asteroid 2012 BC77 will make a close pass (12.8 lunar distances, 0.0329 AU), travelling at 16.42 km/second, to the Earth-Moon system on the 8th February, 2012 @ 03:23 UT ±00:01.
Orbital elements:
2012 BC77 Earth MOID = 0.0114 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 356.50866 (2000.0) P Q
n 0.40192215 Peri. 56.15524 -0.89611150 +0.44220432
a 1.8184782 Node 150.03804 -0.42816751 -0.83881693
e 0.5715425 Incl. 4.35692 -0.11686216 -0.31755551
P 2.45 H 25.1 G 0.15 U 8
The 25 - 57 metre wide asteroid 2012 BC77 will make a close pass (13.0 lunar distances, 0.0334 AU), travelling at 15.46 km/second, to the Earth-Moon system on the 8th February, 2012 @ 14:51 UT ±1 day 03:37.