The 340 - 770 metre wide asteroid 2011 UG21 will make a close pass (69.4 lunar distances, 0.1784 AU), travelling at 19.73 km/second, to the Earth-Moon system on the 6th November, 2012 @ 22:37 UT ±00:01.
Orbital elements:
2011 UG21 Earth MOID = 0.1271 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 185.55732 (2000.0) P Q
n 1.09562017 Peri. 81.94388 -0.95257589 -0.17532802
a 0.9318858 Node 87.70177 +0.06572173 -0.91657910
e 0.5456406 Incl. 14.41334 +0.29711920 -0.35936448
P 0.90 H 19.3 G 0.15 U 9
