The 11 - 25 metre wide asteroid 2011 MX made a close pass (2.5 lunar distances, 0.0064 AU), travelling at 12.36 km/second, to the Earth-Moon system on the 20th June, 2011 @ 04:48 UT ±00:01.
Orbital elements:
2011 MX Earth MOID = 0.0014 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 67.24829 (2000.0) P Q
n 0.57885995 Peri. 297.25164 -0.87883666 +0.41711975
a 1.4258934 Node 268.18929 -0.31287909 -0.87036366
e 0.3952954 Incl. 13.40048 -0.36021215 -0.26168341
P 1.70 H 26.9 G 0.15 U 7