Named in honor of Mario Carpino (b. 1957), Italian astronomer at Brera Astronomical Observatory in Milan. From his initial studies of satellite geodesy, he acquired a taste for extreme accuracy in orbit determination, applying these skills to the study of the dynamics of solar-system bodies in projects such as LONGSTOP and SPACEGUARD. When The Spaceguard Foundation was established in Rome in 1996 he became its secretary. Citation prepared by A. Milani at the request of the discoverers.