Orbital elements:
2012 AW12 Earth MOID = 0.0520 AU
Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 MPC
M 20.48118 (2000.0) P Q
n 0.34606918 Peri. 253.30930 +0.58001607 -0.74182685
a 2.0092197 Node 151.30124 +0.69035950 +0.66695303
e 0.6622669 Incl. 44.49710 -0.43241776 +0.06976093
P 2.85 H 20.4 G 0.15
From 13 observations 2012 Jan. 5-6.