The 29 - 65 metre wide asteroid 2013 GU66 will make a close pass (23.9 lunar distances, 0.0614 AU), travelling at 8.96 km/second, to the Earth-Moon system on the 21st April, 2013 @ 04:42 UT ±00:18.
Orbital elements:
2013 GU66 Earth MOID = 0.0561 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 293.22546 (2000.0) P Q
n 0.84489826 Peri. 269.54641 +0.38424267 +0.91731845
a 1.1081531 Node 23.90087 -0.71101157 +0.36610554
e 0.1742394 Incl. 14.92191 -0.58891435 +0.15650428
P 1.17 H 24.8 G 0.15 U 7