The 72 - 160 metre wide asteroid 2013 BU15 made a close pass (12.3 lunar distances, 0.0315 AU), travelling at 17.79 km/second, to the Earth-Moon system on the 5th February, 2013 @ 02:15 UT ±11:43.
Orbital elements:
2013 BU15 Earth MOID = 0.0006 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 306.12720 (2000.0) P Q
n 0.31586209 Peri. 246.57040 -0.89663136 +0.44208190
a 2.1353597 Node 319.65430 -0.39096706 -0.81677675
e 0.6507735 Incl. 2.19674 -0.20783880 -0.37072811
P 3.12 H 22.9 G 0.15 U 8