Orbital elements:
2013 NM8 Earth MOID = 0.2071 AU
Epoch 2013 June 17.0 TT = JDT 2456460.5 MPC
M 353.43534 (2000.0) P Q
n 0.30067318 Peri. 182.33096 +0.14822444 +0.97918932
a 2.2066811 Node 96.21598 -0.90507638 +0.19080926
e 0.4455448 Incl. 8.01591 -0.39858032 -0.06913829
P 3.28 H 22.6 G 0.15
From 7 observations 2013 July 1-2.