The 260 - 580 metre wide asteroid 2008 KZ5 will make a close pass (35.1 lunar distances, 0.0903 AU), travelling at 8.62 km/second, to the Earth-Moon system on the 15th September, 2013 @ 05:45 UT ±00:01.
Orbital elements:
2008 KZ5 PHA, Earth MOID = 0.0037 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 304.78321 (2000.0) P Q
n 0.39496681 Peri. 194.15499 +0.91819966 +0.38616543
a 1.8397649 Node 142.73902 -0.34778052 +0.89253344
e 0.4527440 Incl. 8.37999 -0.18962618 +0.23293845
P 2.50 H 20.0 G 0.15 U 1