Orbital elements:
2014 QC391 Earth MOID = 0.0010 AU
Epoch 2014 Dec. 9.0 TT = JDT 2457000.5 MPC
M 31.50994 (2000.0) P Q
n 0.51050611 Peri. 37.56523 +0.92198185 -0.38711763
a 1.5504892 Node 345.20141 +0.34569820 +0.83384591
e 0.3915816 Incl. 2.12147 +0.17447698 +0.39349833
P 1.93 H 27.4 G 0.15 U 8
The 9 - 19 metre wide asteroid 2014 QC391 will make a close pass (2.4 lunar distances, 0.0062 AU), travelling at 7.73 km/second, to the Earth-Moon system on the 4th September 2014 @ 21:11 UT ±00:01.