The 200 - 450 metre wide asteroid 2009 YT6 will make a close pass (50.8 lunar distances, 0.1304 AU), travelling at 8.04 km/second, to the Earth-Moon system on the 20th May, 2010.
Orbital elements: 2009 YT6 Earth MOID = 0.0978 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 322.59624 (2000.0) P Q n 0.46150765 Peri. 99.63365 -0.92407958 -0.14821653 a 1.6583777 Node 72.49620 -0.03847731 -0.88098452 e 0.4892313 Incl. 21.67830 +0.38025837 -0.44933077 P 2.14 H 20.7 G 0.15 U 9