783: Rixeyville, VA
784: Stull Observatory, Alfred University, NY
785: Fitz-Randolph Observatory, Princeton, NJ
786: U.S. Naval Obs., Washington (since 1893)
787: U.S. Naval Obs., Washington (before 1893)
788: Mount Cuba Observatory, Wilmington, DE
789: Litchfield Observatory, Hamilton College, Clinton, Oneida County, NY
790: Dominion Observatory, Ottawa, ON
791: Flower and Cook Observatory, Philadelphia, PA
792: U. of Rhode Island, Quonochontaug, RI
793: Dudley Observatory, Albany (before 1893)
794: Vassar College Observatory, Poughkeepsie, NY
795: Rutherford, NY
796: Stamford, CT
797: Yale Observatory, New Haven, CT (Yale University Observatory)
798: Yale Observatory, Bethany, CT (Yale University Observatory)
799: Winchester, MA
800-899800: Harvard Observatory, Arequipa, Peru (Boyden Station)
801: Oak Ridge Observatory
802: Harvard Observatory, Cambridge, MA (Harvard College Observatory)
803: Taunton
804: Santiago-San Bernardo
805: Santiago-Cerro El Roble
806: Santiago-Cerro Calán
807: Cerro Tololo Observatory, La Serena (Cerro Tololo Inter-American Observatory)
808: El Leoncito (became the Dr. Carlos U. Cesco Observatory (Estación de Altura Carlos Ulrico Cesco) in 1990; seems to be the same as the Observatorio Félix Aguilar, San Juan National University), Argentina
809: European Southern Observatory, La Silla (La Silla Observatory)
810: Wallace Observatory, Westford (George R. Wallace Jr. Astrophysical Observatory(WAO), Westford, MA)
811: Maria Mitchell Observatory, Nantucket
812: Vi?a del Mar
813: Santiago-Quinta Normal (1862-1920)
814: North Scituate
815: Santiago-Santa Lucia (1849-1861)
816: Rand Observatory
817: Sudbury (Sudbury, Massachusetts)
818: Gémeaux Observatory, Laval, QC (Observatoire Gémeaux)
819: Val-des-Bois, QC
820: Tarija
821: Córdoba-Bosque Alegre (Estación Astrofísica de Bosque Alegre, Observatorio Astronómico de Córdoba, Argentina)
822: Córdoba (Observatorio Astronómico de Córdoba, Argentina)
823: Fitchburg
824: Lake Clear
825: Granville
826: Plessissville, QC
827: Saint-Félicien, QC
828: Assonet
829: Complejo Astronómico El Leoncito (CASLEO)
830: Hudson
831: Rosemary Hill Observatory, University of Florida
832: Etters
833: Obs. Astronomico de Mercedes, Buenos Aires
834: Buenos Aires-AAAA
835: Drum Hill Station, Chelmsford
836: Furnace Brook Observatory, Cranston
837: Jupiter
838: Dayton
839: La Plata (La Plata Astronomical Observatory; Observatorio Astronómico de La Plata)
840: Flint
841: Martin Observatory, Blacksburg
842: Gettysburg College Observatory
843: Emerald Lane Observatory, Decatur
844: Los Molinos
845: Clinton B. Ford Observatory , Ithaca
846: Principia Astronomical Observatory, Elsah
847: Lunar Cafe Observatory
848: Tenagra Observatory, Cottage Grove
849: Everstar Observatory, Olathe, KS (EverStaR Observatory)
850: Cordell-Lorenz Observatory, Sewanee
851: Burke-Gaffney Observatory, Halifax
852: River Moss Observatory, St. Peters
853: Biosphere 2 Observatory
854: Sabino Canyon Observatory, Tucson
855: Wayside Observatory, Minnetonka
856: Riverside
857: Iowa Robotic Observatory, Sonoita
858: Tebbutt Observatory, Edgewood
859: Wykrota Observatory-CEAMIG (Observatório Wykrota- CEAMIG (Centro de Estudos Astron?micos de Minas Gerais))
860: Valinhos
861: Bar?o Geraldo
862: Saku
863: Furukawa
864: Kumamoto
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