Orbital elements:
2008 YZ28 Earth MOID = 0.0925 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 351.73527 (2000.0) P Q
n 0.24956212 Peri. 131.19163 +0.65242601 -0.48978504
a 2.4985245 Node 266.49672 +0.39528763 +0.87100269
e 0.6206722 Incl. 35.40836 +0.64659724 -0.03827435
P 3.95 H 19.9 G 0.15 U 2
The 270 - 590 metre wide asteroid 2008 YZ28 will make a close pass (63.7 lunar distances, 0.1637 AU), travelling at 21.11 km/second, to the Earth-Moon system on the 9th December, 2012 @ 01:03 UT ±12:18.
Orbital elements: 2008 YZ28 Earth MOID = 0.0971 AU Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC M 1.72116 (2000.0) P Q n 0.20816441 Peri. 133.85189 +0.62985482 -0.51647135 a 2.8196707 Node 266.33535 +0.43317008 +0.85352799 e 0.6588082 Incl. 35.54270 +0.64470659 -0.06890083 P 4.73 H 19.9 G 0.15 U 9