The 330 - 750 metre wide asteroid 2008 AS28 will make a close pass (51.9 lunar distances, 0.1334 AU), travelling at 20.26 km/second, to the Earth-Moon system on the 16th June, 2011 @ 21:28 UT ±00:01.
Orbital elements:
2008 AS28 Earth MOID = 0.0680 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 7.80482 (2000.0) P Q
n 0.26099979 Peri. 248.23226 +0.84849891 +0.40593754
a 2.4249862 Node 86.42641 -0.26386178 +0.88064052
e 0.7313325 Incl. 19.88707 -0.45872275 +0.24430920
P 3.78 H 19.5 G 0.15 U 3