The 10 - 23 metre wide asteroid 2010 CQ19 made a close pass (13.7-lunar distances, 0.0353-AU), travelling at 8.41-km/second, to the Earth-Moon system on the 12th February, 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 CQ19 Earth MOID = 0.0216 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 354.23450 (2000.0) P Q n 0.20616816 Peri. 306.58594 -0.61953466 -0.78496929 a 2.8378427 Node 181.69624 +0.72156885 -0.56943187 e 0.6454040 Incl. 0.24767 +0.30905533 -0.24407082 P 4.78 H 27.1 G 0.15 U 9