Update: The 480 - 1100 metre wide asteroid 2012 KM45 will make a close pass (39.5 lunar distances, 0.1015 AU), travelling at 20.05 km/second, to the Earth-Moon system on the 5th July, 2012 @ 20:24 UT ±00:01.
Orbital elements:
2012 KM45 Earth MOID = 0.0681 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 333.35798 (2000.0) P Q
n 0.28122312 Peri. 158.69719 -0.23216016 +0.84895723
a 2.3072892 Node 95.28593 -0.94704876 -0.08599079
e 0.6006545 Incl. 28.47417 -0.22181144 -0.52141845
P 3.50 H 18.5 G 0.15 U 8
The 530 - 1200 metre wide asteroid 2012 KM45 will make a close pass (40.4 lunar distances, 0.1038 AU), travelling at 20.25 km/second, to the Earth-Moon system on the 6th July, 2012 @ 01:59 UT ±06:49.