The 10 - 22 metre wide asteroid 2013 KB will make a close pass (3.2 lunar distances, 0.0081 AU), travelling at 6.75 km/second, to the Earth-Moon system on the 22nd May, 2013 @ 06:05 UT ±00:15.
Orbital elements:
2013 KB Earth MOID = 0.0083 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 345.35581 (2000.0) P Q
n 0.37320998 Peri. 191.79634 -0.39218538 +0.91888386
a 1.9105888 Node 55.12742 -0.83966677 -0.33853351
e 0.4679128 Incl. 2.99953 -0.37569980 -0.20260186
P 2.64 H 27.2 G 0.15 U 7