Orbital elements:
2012 KX41 Earth MOID = 0.0340 AU
Epoch 2012 May 13.0 TT = JDT 2456060.5 MPC
M 344.78264 (2000.0) P Q
n 0.27237696 Peri. 251.75850 +0.50613717 +0.86048680
a 2.3569795 Node 48.79074 -0.75918013 +0.47653685
e 0.6187744 Incl. 4.43720 -0.40923183 +0.18020847
P 3.62 H 24.8 G 0.15
From 7 observations 2012 May 19-20.
The 27 - 61 metre wide asteroid 2012 KX41 will make a close pass (14.4 lunar distances, 0.0371 AU), travelling at 13.40 km/second, to the Earth-Moon system on the 2nd June, 2012 @ 09:29 UT ±06:10.