Orbital elements:
2011 LD1 Earth MOID = 0.3291 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 77.36733 (2000.0) P Q
n 0.45506280 Peri. 31.42407 -0.30196645 -0.71819530
a 1.6739989 Node 83.29447 +0.68997346 -0.61842980
e 0.7748803 Incl. 39.14052 +0.65783956 +0.31896723
P 2.17 H 18.7 G 0.15 U 9
The 470 - 1100 metre wide asteroid 2011 LD1 made a close pass (0.457 AU), travelling at 3.09 km/second, to the Earth-Moon system on the 16th May, 2011 @ 09:15 UT ±02:02.