Orbital elements:
2013 OT3 Earth MOID = 0.1962 AU
Epoch 2013 July 7.0 TT = JDT 2456480.5 MPC
M 353.25463 (2000.0) P Q
n 0.37593251 Peri. 47.45316 +0.60245461 +0.79189526
a 1.9013532 Node 259.86120 -0.75877694 +0.52947234
e 0.3710642 Incl. 5.81598 -0.24760048 +0.30423830
P 2.62 H 23.5 G 0.15
From 7 observations 2013 July 16-19.