This list was last updated on 2010 Jan. 30.
Rank Discoveries Between Site name 1 111652 1980-2009 Lincoln Laboratory ETS, New Mexico 2 25977 1981-2009 Steward Observatory, Kitt Peak-Spacewatch 3 16790 1999-2007 Palomar Mountain/NEAT 4 14227 1998-2008 Lowell Observatory-LONEOS 5 7126 1998-2009 Catalina Sky Survey 6 6576 1949-2007 Palomar Mountain 7 5763 1995-2006 Haleakala-AMOS 8 5494 1976-2005 European Southern Observatory, La Silla 9 3872 2004-2009 Mt. Lemmon Survey 10 2449 1991-2002 Oizumi 11 1756 1975-2007 Siding Spring Observatory 12 1580 2001-2009 LPL/Spacewatch II 13 1379 1995-2001 Visnjan 14 1285 1966-1992 Crimea-Nauchnij 15 1247 2001-2005 Desert Eagle Observatory 16 1220 1982-2002 Peking Observatory, Xinglong Station 17 878 1977-2002 Klet Observatory, Ceske Budejovice 18 875 1996-1999 Caussols-ODAS 19 822 1891-2007 Heidelberg-Konigstuhl 20 799 1997-2008 Reedy Creek 21 723 1987-2000 Kushiro 22 720 1996-2005 Campo Imperatore-CINEOS 23 698 1973-2000 Lowell Observatory, Anderson Mesa Station 24 685 2004-2009 Siding Spring Survey 25 663 1987-2006 Kitami 26 615 1994-2003 Ondrejov 27 588 1995-2003 Prescott 28 540 1995-2002 Haleakala-NEAT/GEODSS 29 536 1961-1995 Karl Schwarzschild Observatory, Tautenburg 30 491 1996-2008 Goodricke-Pigott Observatory, Tucson 31 481 1999-2003 Fountain Hills 32 321 1993-2000 Nachi-Katsuura Observatory 33 278 1995-2009 Bergisch Gladbach 34 276 1998-2004 Apache Point-Sloan Digital Sky Survey 35 274 1997-2009 Crni Vrh 36 273 1978-1996 Caussols 37 272 1982-2006 Kitt Peak 38 271 1978-2006 Cerro Tololo Observatory, La Serena 39 265 1925-2005 Uccle 40 239 1994-2007 San Marcello Pistoiese 41 236 2000-2001 Desert Beaver Observatory 42 226 1998-2007 Farpoint Observatory, Eskridge 43 223 1981-1998 Geisei 44 199 1935-1953 Turku 45 196 1997-1999 Woomera 46 190 1975-2005 Uppsala-Kvistaberg 47 181 1996-2008 George Observatory, Needville 181 1993-2008 Farra d'Isonzo 49 175 1987-2000 Gekko 50 172 2006-2009 OAM Observatory, La Sagra