Orbital elements:
2011 UH21 Earth MOID = 0.0932 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 325.16044 (2000.0) P Q
n 0.36556940 Peri. 50.83285 +0.30579920 -0.95185395
a 1.9371184 Node 21.39041 +0.85437326 +0.26439140
e 0.4483571 Incl. 3.37462 +0.42015853 +0.15514914
P 2.70 H 22.8 G 0.15 U 8
The 72 - 160 metre wide asteroid 2011 UH21 will make a close pass (47.1 lunar distances, 0.1210 AU), travelling at 6.02 km/second, to the Earth-Moon system on the 19th November, 2011 @ 02:41 UT ±08:12.