The 76 - 170 metre wide asteroid 2010 EC43 will make a close pass (18.2 lunar distances, 0.0467 AU), travelling at 9.49 km/second, to the Earth-Moon system on the 18th April, 2010. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Orbital elements: 2010 EC43 Earth MOID = 0.0052 AU Epoch 2010 Mar. 5.0 TT = JDT 2455260.5 MPC M 350.08962 (2000.0) P Q n 0.21466688 Peri. 226.56283 -0.86406926 +0.50335593 a 2.7624389 Node 343.65806 -0.45748558 -0.78870224 e 0.6530521 Incl. 0.84233 -0.20997917 -0.35296115 P 4.59 H 22.7 G 0.15 From 14 observations 2010 Mar. 13-14.