Update: The 12 - 28 metre wide asteroid 2003 XV will make a close pass (1.1 lunar distances, 0.0027 AU), travelling at 11.93 km/second, to the Earth-Moon system on the 7th December, 2011 @ 06:41 UT ±00:01.
Orbital elements:
2003 XV Earth MOID = 0.0020 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 309.14135 (2000.0) P Q
n 0.36948927 Peri. 231.09646 -0.55645836 -0.82700865
a 1.9233936 Node 252.89524 +0.78589526 -0.49260784
e 0.5513919 Incl. 4.80546 +0.26967154 -0.27091366
P 2.67 H 26.8 G 0.15 U 0
The 12 - 27 metre wide asteroid 2003 XV will make a close pass (10.2 lunar distances, 0.0262 AU), travelling at 12.66 km/second, to the Earth-Moon system on the 4th December, 2011 @ 02:59 UT ±2 days 19:31.