Orbital elements:
2011 YA29 Earth MOID = 0.0679 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 14.62371 (2000.0) P Q
n 0.69843112 Peri. 237.81178 -0.85843290 -0.33557328
a 1.2581150 Node 279.97932 +0.49026771 -0.75910684
e 0.2341245 Incl. 23.19622 -0.15076648 -0.55780587
P 1.41 H 25.0 G 0.15 U 8
The 27 - 61 metre wide asteroid 2011 YA29 will make a close pass (26.9 lunar distances, 0.0692 AU), travelling at 13.56 km/second, to the Earth-Moon system on the 4th January, 2012 @ 07:34 UT ±00:22.