S.D. Ross, W.S. Koon (Control and Dynamical Systems, Caltech), M.W. Lo (Navigation and Mission Design, Jet Propulsion Laboratory), J.E. Marsden (Control and Dynamical Systems, Caltech)
G. F. Benedict, B. E. McArthur (McDonald Observatory), T. E. Harrison (New Mexico State U.), J. Lee (Yale), C. L. Slesnick (University of Virginia), HST Astrometry Science Team