I calculated these elements with Find_Orb for anyone who has a suitable sucker hole and wants to give it a go.
Code:
2012 BX34
Perihelion 2012 Apr 28.095101 TT = 2:16:56 (JD 2456045.595101)
Epoch 2012 Jan 27.0 TT = JDT 2455953.5 Earth MOID: 0.0002 Me: 0.0884
M 232.78387 (2000.0) P Q
n 1.38135610 Peri. 329.22674 0.11506757 0.97925304
a 0.79848289 Node 306.86221 -0.86368807 0.01567570
e 0.3125459 Incl. 12.03338 -0.49071617 0.20203400
P 0.71/260.61d H 27.6 G 0.15 q 0.54892029 Q 1.04804548
From 65 observations 2012 Jan. 25-27; RMS error 0.813 arcseconds
# Perturbers: Earth Moon