Orbital elements:
2011 WS46 Earth MOID = 0.0229 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 246.30557 (2000.0) P Q
n 0.73892423 Peri. 279.23386 -0.89299725 -0.31471961
a 1.2117214 Node 243.00352 +0.39393214 -0.89228279
e 0.4645812 Incl. 21.16592 -0.21765425 -0.32370200
P 1.33 H 23.7 G 0.15 U 8
The 48 - 110 metre wide asteroid 2011 WS46 will make a close pass (14.7 lunar distances, 0.0377 AU), travelling at 16.97 km/second, to the Earth-Moon system on the 29th November, 2011 @ 16:46 UT ±00:03.