Orbital elements:
2005 RK3 Earth MOID = 0.0149 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 13.21483 (2000.0) P Q
n 0.70757272 Peri. 18.28174 +0.99964693 -0.01827704
a 1.2472552 Node 342.73139 +0.00753500 +0.89104203
e 0.1851759 Incl. 3.72511 +0.02548013 +0.45355270
P 1.39 H 23.7 G 0.15 U 0
The 52 - 120 metre wide asteroid 2005 RK3 will make a close pass (71.7 lunar distances, 0.1843 AU), travelling at 8.27 km/second, to the Earth-Moon system on the 8th August, 2012 @ 16:16 UT ±00:45.