Radar data obtained from Arecibo and Goldstone in March 2001 and photometry obtained in early 2001 at Ondrejov Observatory are used to construct two distinct, three-dimensional shape models of near-Earth asteroid (29075) 1950 DA.  As reported by Busch et al. (2007), the data allow for retrograde and prograde models and provide a good match to the image resolution of 15 to 38 m.  The same sidereal period, 2.12160 +/- 0.00004 h, was determined for both models.
 


REFERENCES 
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Busch, M.W., J.D. Giorgini, S.J. Ostro, L.A.M. Benner, R.F. Jurgens, R. Rose, M.D. Hicks, P. Pravec, P. Kusnirak,  M.J. Ireland, D.J. Scheeres, S.B. Broschart C. Magri, M.C. Nolan, A.A. Hine, J.L. Margot, Physical modeling of near-Earth asteroid (29075) 1950 DA, Icarus, 190, 608-621, 2007, doi:10.1016/j.icarus.2007.03.032.