The 97 - 220 metre wide asteroid 2009 SL2 made a close pass (62.4 Lunar Distances, 0.1605 AU), travelling at 13.76 km/s, to the Earth-Moon system on the 15th September, 2009.
Orbital elements: 2009 SL2 Earth MOID = 0.1554 AU Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 11.63472 (2000.0) P Q n 0.92590694 Peri. 223.99112 -0.65996446 +0.75046913 a 1.0425362 Node 5.09698 -0.53160102 -0.43330136 e 0.2488749 Incl. 23.38096 -0.53089291 -0.49904510 P 1.06 H 22.2 G 0.15 U 8