The 10 - 22 metre wide asteroid 2011 BL45 will make a close pass (38.6 lunar distances, 0.0991 AU), travelling at 3.87 km/second, to the Earth-Moon system on the 19th August, 2011 @ 13:51 UT ±00:48.
Orbital elements: 2011 BL45 Earth MOID = 0.0010 AU Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC M 210.57799 (2000.0) P Q n 0.93569194 Peri. 153.72265 +0.32224057 +0.94590968 a 1.0352553 Node 135.04896 -0.87765132 +0.31341260 e 0.0205602 Incl. 3.05302 -0.35480864 +0.08382965 P 1.05 H 27.6 G 0.15 U 7