The 430 - 970 metre wide asteroid 2009 OO9 will make a close pass (39.1 lunar distances, 0.1005 AU), travelling at 26.20 km/second, to the Earth-Moon system on the 28th August, 2011 @ 21:43 UT ±00:01.
Orbital elements:
2009 OO9 Earth MOID = 0.0729 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 337.03379 (2000.0) P Q
n 0.47628600 Peri. 321.99699 -0.13657757 -0.97672550
a 1.6238934 Node 135.15303 +0.95661525 -0.17341070
e 0.8120771 Incl. 13.56357 +0.25735934 +0.12623797
P 2.07 H 18.9 G 0.15 U 5
Orbital elements: 2009 OO9 Earth MOID = 0.0697 AU Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 306.25494 (2000.0) P Q n 0.57676069 Peri. 325.39458 -0.17875935 -0.97057398 a 1.4293512 Node 134.29426 +0.94595249 -0.21463827 e 0.7968749 Incl. 13.02715 +0.27059008 +0.10916301 P 1.71 H 19.0 G 0.15 U 9