Orbital elements:
2011 BA Earth MOID = 0.1640 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 59.33311 (2000.0) P Q
n 0.39163263 Peri. 152.94693 -0.75483254 +0.62693290
a 1.8501920 Node 67.22557 -0.63326688 -0.61997235
e 0.6299935 Incl. 12.07159 -0.17088269 -0.47179383
P 2.52 H 20.1 G 0.15 U 4
The 270 - 610 metre wide asteroid 2011 BA will make a close pass (77.7 lunar distances, 0.1996 AU), travelling at 17.45 km/second, to the Earth-Moon system on the 10th February, 2011 @ 18:11 UT ±05:33.
Orbital elements: 2011 BA Earth MOID = 0.1590 AU Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC M 339.67385 (2000.0) P Q n 0.41291661 Peri. 151.74404 -0.75942132 +0.62119414 a 1.7860536 Node 67.98499 -0.62927763 -0.62586302 e 0.6104260 Incl. 12.03989 -0.16519357 -0.47160717 P 2.39 H 20.0 G 0.15 U 9