Orbital elements:
2003 AF23 PHA, Earth MOID = 0.0331 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 172.94105 (2000.0) P Q
n 1.20496931 Peri. 43.93894 +0.81861765 +0.43284399
a 0.8746186 Node 286.80547 -0.57214151 +0.67202257
e 0.4258543 Incl. 23.22534 +0.05019193 +0.60085918
P 0.82 H 20.6 G 0.15 U 4
The 200 - 460 metre wide asteroid 2003 AF23 will make a close pass (14.1 lunar distances, 0.0361 AU), travelling at 16.18 km/second, to the Earth-Moon system on the 4th January, 2012 @ 12:43 UT ±00:11.