The 25 - 57 metre wide asteroid 2011 KB will make a close pass (40.8 lunar distances, 0.10491 AU), travelling at 7.28 km/second, to the Earth on the 25th May 2018 @ 16:12 UT ±1 day 21:13.
The 25 - 57 metre wide asteroid 2011 KB will make a close pass (91.8 LD, 0.235 AU) travelling at 15.8 km/second, to the Earth-Moon system on the 30th July 2015 @ 16:12 UT ±04:02.
The 26 - 59 metre wide asteroid 2011 KB made a close pass (13.5 lunar distances, 0.0348 AU), travelling at 8.37 km/second, to the Earth-Moon system on the 12th May, 2011 @ 14:05 UT ±00:25.
Orbital elements:
2011 KB Earth MOID = 0.0062 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 245.63442 (2000.0) P Q
n 1.26946361 Peri. 216.61101 -0.00501290 -0.99768929
a 0.8447390 Node 233.77362 +0.93624415 +0.01912186
e 0.3643779 Incl. 4.81815 +0.35131434 -0.06519533
P 0.78 H 25.0 G 0.15 U 9