The 13 - 29 metre wide asteroid 2012 GY11 made a close pass (9.0 lunar distances, 0.0232 AU), travelling at 7.21 km/second, to the Earth-Moon system on the 14th April, 2012 @ 14:06 UT ±00:01.
Orbital elements:
2012 GY11 Earth MOID = 0.0170 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 355.19178 (2000.0) P Q
n 0.40955235 Peri. 331.68639 -0.99918197 +0.01470847
a 1.7958212 Node 209.22978 -0.00124753 -0.94227907
e 0.4451782 Incl. 4.42439 -0.04042063 -0.33450534
P 2.41 H 26.5 G 0.15 U 7