Orbital elements:
2012 SD22 PHA, Earth MOID = 0.0155 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 330.78079 (2000.0) P Q
n 0.35798805 Peri. 313.39561 -0.07275899 -0.99353162
a 1.9643718 Node 140.52616 +0.95010998 -0.09563195
e 0.5725145 Incl. 7.88243 +0.30331033 +0.06123270
P 2.75 H 20.1 G 0.15 U 1
Update: The 260 - 580 metre wide asteroid 2012 SD22 will make a close pass (67.7 lunar distances, 0.1739 AU), travelling at 10.77 km/second, to the Earth-Moon system on the 10th December, 2012 @ 01:59 UT ±00:01.
Orbital elements:
2012 SD22 PHA, Earth MOID = 0.0157 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 330.85448 (2000.0) P Q
n 0.35768424 Peri. 313.47509 -0.07186662 -0.99361084
a 1.9654840 Node 140.39739 +0.94999015 -0.09477140
e 0.5729417 Incl. 7.84609 +0.30389786 +0.06128521
P 2.76 H 20.0 G 0.15 U 8
The 260 - 590 metre wide asteroid 2012 SD22 will make a close pass (67.9 lunar distances, 0.1744 AU), travelling at 10.83 km/second, to the Earth-Moon system on the 9th December, 2012 @ 05:42 UT ±23:19.