. "1923 Osiris (4011 P-L) is a main-belt asteroid discovered on September 24, 1960 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden, on Palomar Observatory Schmidt plates taken by Tom Gehrels."@en . . "1960-09-24Z"^^ . "0.0591"^^ . "May 14, 2008" . "3.41043e+11"^^ . . "4011 P-L"@en . "1.19908e+08"^^ . "13.1"^^ . "Osiris"@en . "3.87483e+11"^^ .