The 440 - 980 metre wide asteroid 2009 OZ4 will make a close pass (61.9 Lunar Distances, 0.1590 AU), travelling at 23.97 km/s, to the Earth-Moon system on the 17th August, 2009.
Orbital elements: 2009 OZ4 Earth MOID = 0.1551 AU Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 336.02246 (2000.0) P Q n 0.22865922 Peri. 240.18829 +0.81936376 -0.41687287 a 2.6485626 Node 140.26895 +0.40337134 +0.90700681 e 0.6349834 Incl. 38.00014 -0.40735071 +0.05962927 P 4.31 H 18.9 G 0.15 U 9