Orbital elements:
2012 BX1 Earth MOID = 0.0136 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 95.66926 (2000.0) P Q
n 0.80362561 Peri. 276.33677 +0.80806086 -0.55441218
a 1.1457773 Node 117.50574 +0.58897452 +0.75337053
e 0.3047869 Incl. 12.97591 +0.01211050 +0.35363821
P 1.23 H 24.8 G 0.15 U 7
The 30 - 66 metre wide asteroid 2012 BX1 made a close pass (8.1 lunar distances, 0.0207 AU), travelling at 10.71 km/second, to the Earth-Moon system on the 15th January, 2012 @ 00:53 UT ±00:01.