The 120 - 270 metre wide asteroid 2011 HH1 will make a close pass (32.3 lunar distances, 0.0829 AU), travelling at 17.12 km/second, to the Earth-Moon system on the 8th May, 2011 @ 22:51 UT ±00:38.
Orbital elements:
2011 HH1 Earth MOID = 0.0807 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 309.14795 (2000.0) P Q
n 0.38364034 Peri. 223.43790 +0.41377195 +0.89167936
a 1.8758000 Node 71.78147 -0.77345412 +0.45067412
e 0.5943427 Incl. 11.14343 -0.48016819 +0.04243544
P 2.57 H 21.5 G 0.15 U 8