Orbital elements:
2011 WT2 Earth MOID = 0.1676 AU
Epoch 2011 Nov. 15.0 TT = JDT 2455880.5 MPC
M 0.13000 (2000.0) P Q
n 0.08483997 Peri. 174.81035 +0.79335684 -0.58372365
a 5.1294291 Node 222.49763 +0.54891809 +0.80866532
e 0.7740636 Incl. 14.81819 +0.26319927 +0.07298702
P 11.6 H 21.7 G 0.15
From 22 observations 2011 Nov. 17-18.