The 25 - 60 metre wide asteroid 2009 HG21 will make a close pass (16.9 Lunar Distances, 0.0435 AU), travelling at 9.98 km/s, to the Earth-Moon system on the 2nd May 2009.
Orbital elements: 2009 HG21 Earth MOID = 0.0163 AU Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 322.71572 (2000.0) P Q n 1.13922840 Peri. 316.90448 +0.98153089 +0.18408359 a 0.9079505 Node 32.59513 -0.13846782 +0.87140457 e 0.3725552 Incl. 5.54584 -0.13199917 +0.45471674 P 0.87 H 24.9 G 0.15 U 9