The 41 - 93 metre wide asteroid 2011 KY15 will make a close pass (61.7 lunar distances, 0.1586 AU), travelling at 17.61 km/second, to the Earth-Moon system on the 15th May, 2012 @ 21:30 UT ±00:17.
The 45 - 100 metre wide asteroid 2011 KY15 made a close pass (8.0 lunar distances, 0.0205 AU), travelling at 13.03 km/second, to the Earth-Moon system on the 24th May, 2011 @ 15:52 UT ±00:01.
Orbital elements:
2011 KY15 Earth MOID = 0.0161 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 340.31370 (2000.0) P Q
n 1.88494642 Peri. 185.77778 +0.36668820 -0.89398064
a 0.6490379 Node 242.94646 +0.86473688 +0.42962847
e 0.6020095 Incl. 16.81048 +0.34317617 -0.12734985
P 0.52 H 23.9 G 0.15 U 9