The 230 - 520 metre wide asteroid 2008 EK1 will make a close pass (32.9 lunar distances, 0.0845 AU), travelling at 24.79 km/second, to the Earth-Moon system on the 6th September, 2011 @ 21:44 UT ±00:01.
Orbital elements: 2008 EK1 Earth MOID = 0.0544 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 21.66647 (2000.0) P Q n 0.51396025 Peri. 256.22414 +0.44822520 -0.87424194 a 1.5435346 Node 162.90670 +0.83919464 +0.48341226 e 0.5571338 Incl. 39.39226 -0.30797163 +0.04487332 P 1.92 H 20.3 G 0.15 U 4