The 110 - 240 metre wide asteroid 2011 GC will make a close pass (57.8 lunar distances, 0.1484 AU), travelling at 4.68 km/second, to the Earth-Moon system on the 4th May, 2011 @ 04:39 UT ±2 days 22:04.
Orbital elements:
2011 GC Earth MOID = 0.1442 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 336.63371 (2000.0) P Q
n 0.28347133 Peri. 337.44467 -0.73975842 +0.67173960
a 2.2950736 Node 244.81697 -0.61058122 -0.69451977
e 0.4981943 Incl. 2.47193 -0.28275086 -0.25769788
P 3.48 H 21.9 G 0.15 U 8