The 120 - 270 metre wide asteroid 2011 BZ18 will make a close pass (44.4 lunar distances, 0.1140 AU), travelling at 15.66 km/second, to the Earth-Moon system on the 12th February, 2011 @ 01:37 UT ±00:06.
Orbital elements: 2011 BZ18 Earth MOID = 0.1138 AU Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC M 352.58361 (2000.0) P Q n 0.18762846 Peri. 253.55789 -0.95450918 +0.21208287 a 3.0218315 Node 298.26696 -0.08524575 -0.86768427 e 0.7046006 Incl. 13.76743 -0.28573657 -0.44960523 P 5.25 H 21.7 G 0.15 U 8