The 420 - 940 metre wide asteroid 2012 BT23 will make a close pass (48.0 lunar distances, 0.1232 AU), travelling at 12.96 km/second, to the Earth-Moon system on the 20th March, 2012 @ 16:12 UT ±17:01.
Orbital elements:
2012 BT23 PHA, Earth MOID = 0.0492 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 346.04466 (2000.0) P Q
n 0.36171010 Peri. 43.04462 -0.70041014 +0.71370692
a 1.9508728 Node 182.52552 -0.69010929 -0.67966721
e 0.5944961 Incl. 9.05294 -0.18213951 -0.16933672
P 2.72 H 19.0 G 0.15 U 8