We provide a three-dimensional shape model of near-Earth asteroid (54509) YORP (provisional designation of 2000 PH5) based on radar images and optical photometry from Taylor et al. (2007).  YORP was observed over three apparitions from 2001 - 2005.  Radar observations from Arecibo and Goldstone were used to construct the 3-D shape model.  Other observatories provided observations at optical wavelengths to characterize (54509) YORP.  The model provides a good match to the image resolution of 7 - 18 m.  The determined sidereal rotation period is 0.2029 +/- 0.0001 h.



REFERENCES 
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Taylor, P.A., J.L. Margot, D. Vokrouhlicky, D.J. Scheeres, P. Pravec, S.C. Lowry, A. Fitzsimmons, M.C. Nolan, S.J. Ostro, L.A.M. Benner, J.D. Giorgini, C. Magri, Spin rate of asteroid (54509) 2000 PH5 increasing due to the YORP effect, Science, 316, 274-277, 2007, doi:10.1126/science.1139038.