The 220 - 490 metre wide asteroid 2011 EN40 will make a close pass (65.1 lunar distances, 0.1673 AU), travelling at 27.89 km/second, to the Earth-Moon system on the 25th March, 2014 @ 13:14 UT ±00:01.
Orbital elements: 2011 EN40 Earth MOID = 0.1486 AU Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC M 273.66703 (2000.0) P Q n 0.70473644 Peri. 165.10704 +0.69182581 +0.71229726 a 1.2505994 Node 148.39226 -0.68342574 +0.69885166 e 0.7229247 Incl. 13.05221 -0.23303713 +0.06510731 P 1.40 H 20.3 G 0.15 U 9