The 25 - 57 metre wide asteroid 2008 XB2 will make a close pass (54.6 lunar distances, 0.1404 AU), travelling at 15.38 km/second, to the Earth-Moon system on the 5th December, 2013 @ 16:54 UT ±1 day 15:57.
Orbital elements: 2008 XB2 Earth MOID = 0.0052 AU Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC M 302.23635 (2000.0) P Q n 0.79682236 Peri. 259.29332 -0.98188999 -0.18468828 a 1.1522898 Node 270.05407 +0.18610157 -0.89855022 e 0.3725640 Incl. 2.41958 +0.03547183 -0.39811776 P 1.24 H 24.5 G 0.15 U 9