Update: The 51 - 110 metre wide asteroid 2012 GB5 will make a close pass (22.6 lunar distances, 0.0581 AU), travelling at 11.18 km/second, to the Earth-Moon system on the 9th May, 2012 @ 23:21 UT ±00:01.
Orbital elements:
2012 GB5 Earth MOID = 0.0413 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 332.06227 (2000.0) P Q
n 0.31693472 Peri. 71.88041 -0.00976793 +0.99958140
a 2.1305391 Node 197.62674 -0.94807952 -0.01791543
e 0.5748257 Incl. 5.15969 -0.31788333 +0.02271717
P 3.11 H 23.8 G 0.15 U 9
The 48 - 110 metre wide asteroid 2012 GB5 will make a close pass (22.8 lunar distances, 0.0585 AU), travelling at 11.26 km/second, to the Earth-Moon system on the 9th May, 2012 @ 23:22 UT ±04:08.