The 23 - 52 metre wide asteroid 2011 HH will make a close pass (39.5 lunar distances, 0.1016 AU), travelling at 5.04 km/second, to the Earth-Moon system on the 21st March 2014 @ 22:26 UT ±14:41.
Orbital elements:
2011 HH Earth MOID = 0.0317 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 321.45011 (2000.0) P Q
n 0.66035455 Peri. 150.08470 -0.95863652 +0.28131653
a 1.3060243 Node 46.32132 -0.27158717 -0.85848585
e 0.2140492 Incl. 3.43436 -0.08518470 -0.42879254
P 1.49 H 25.0 G 0.15 U 7