The 17 - 38 metre wide asteroid 2012 WS3 will make a close pass (37.1 lunar distances, 0.09537 AU), travelling at 11.54 km/second, to the Earth on the 16th May 2018 @ 07:40 UT ±11:36.
Orbital elements:
2012 WS3 Earth MOID = 0.0010 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 15.74240 (2000.0) P Q
n 0.83910007 Peri. 86.12722 +0.84494377 +0.53164430
a 1.1132522 Node 241.74726 -0.51330239 +0.77528200
e 0.2802957 Incl. 3.80910 -0.15030198 +0.34101636
P 1.17 H 25.8 G 0.15 U 8