flags60width=640,height=480,toolbar=no,scrollbars=yes,resizable=yes 1 Palomar-Leiden survey (PLS) asteroid 2 Palomar-Leiden T-2 survey asteroid 4 Palomar-Leiden T-3 survey asteroid 8 U.K. Schmidt Telescope-Caltech asteroid survey (UCAS) asteroid 16 Palomar-Leiden T-1 survey asteroid