Orbital elements:
2011 KK15 Earth MOID = 0.0069 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 30.44526 (2000.0) P Q
n 0.25818480 Peri. 342.93087 -0.83173064 +0.55492145
a 2.4425808 Node 230.78660 -0.50678323 -0.77132007
e 0.6138485 Incl. 1.25141 -0.22670444 -0.31165290
P 3.82 H 22.2 G 0.15 U 7
The 99 - 220 metre wide asteroid 2011 KK15 made a close pass (12.3 lunar distances, 0.0317 AU), travelling at 9.92 km/second, to the Earth-Moon system on the 22nd May, 2011 @ 03:34 UT ±00:01.