The 75 - 170 metre wide asteroid 2013 BP18 made a close pass (12.0 lunar distances, 0.0309 AU), travelling at 12.17 km/second, to the Earth-Moon system on the 15th January, 2013 @ 23:33 UT ±00:01.
Orbital elements:
2013 BP18 Earth MOID = 0.0119 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 303.69218 (2000.0) P Q
n 0.71058518 Peri. 147.08136 +0.11235152 -0.94078277
a 1.2437276 Node 294.64239 +0.81855907 +0.27011112
e 0.2235343 Incl. 20.60355 +0.56332777 -0.20486036
P 1.39 H 22.7 G 0.15 U 8