The 180 - 400 metre wide asteroid 2011 HQ will make a close pass (60.6 lunar distances, 0.1558 AU), travelling at 7.25 km/second, to the Earth-Moon system on the 17th May, 2011 @ 19:03 UT ±00:11.
Orbital elements:
2011 HQ Earth MOID = 0.1506 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 323.08507 (2000.0) P Q
n 0.46823790 Peri. 144.71358 -0.80527490 +0.55983047
a 1.6424482 Node 70.49243 -0.58038027 -0.67697909
e 0.3097517 Incl. 11.95476 -0.12120675 -0.47779616
P 2.10 H 21.2 G 0.15 U 7