The 140 - 300 metre wide asteroid 2012 QF42 will make a close pass (42.8 lunar distances, 0.1099 AU), travelling at 8.69 km/second, to the Earth-Moon system on the 27th September, 2012 @ 15:41 UT ±00:25.
Orbital elements:
2012 QF42 Earth MOID = 0.0879 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 355.48687 (2000.0) P Q
n 0.26479123 Peri. 236.67036 +0.86226970 -0.50489868
a 2.4017823 Node 153.58986 +0.48920886 +0.81013727
e 0.5629120 Incl. 5.10802 +0.13101774 +0.29791765
P 3.72 H 21.4 G 0.15 U 8