Observations of asteroid 2000 ET70 took place in February and August 2012. A paper describing our results has been submitted:
S. P. Naidu, J. L. Margot, M. W. Busch, P. A. Taylor, M. C. Nolan, E. S. Howell, M. Brozovic, L. A. M. Benner, J. D. Giorgini, C. Magri. Radar Imaging and Physical Characterization of Near-Earth Asteroid (162421) 2000 ET70.
Radar images from the February 2012 campaign of observations:
Views of the shape model along principal axes (z is the spin axis):
The gravity environment on this asteroid is strongly affected by the spin: