Orbital elements:
2011 PC2 Earth MOID = 0.1471 AU
Epoch 2011 July 18.0 TT = JDT 2455760.5 MPC
M 341.42612 (2000.0) P Q
n 0.25247579 Peri. 272.34467 +0.94889416 -0.27966508
a 2.4792647 Node 103.92260 +0.31436867 +0.87840227
e 0.5925636 Incl. 8.66578 -0.02778873 +0.38755244
P 3.90 H 23.0 G 0.15
From 6 observations 2011 Aug. 1-2.