Na saite Astrometriya Astronomicheskie instrumenty Astronomicheskoe obrazovanie Astrofizika Istoriya astronomii Kosmonavtika, issledovanie kosmosa Lyubitel'skaya astronomiya Planety i Solnechnaya sistema Solnce

Russkii astronom. Okonchil Gel'singforsskii un-t. V 1869-1871 - assistent Gel'singforsskoi observatorii, v 1871-1873 - mladshii nablyudatel' observatorii v Bonne, v 1874-1876 rabotal vychislitelem v Pulkovskoi observatorii. V 1876-1894 - astronom-nablyudatel' observatorii Kievskogo un-ta. Provel obshirnye nablyudeniya okolopolyusnyh zvezd, sostavil katalog ih polozhenii. Vyvel formulu dlya tochnogo vychisleniya koordinat blizkih k polyusu zvezd (formula Fabriciusa). Razrabotal novyi sposob ucheta oshibok meridiannogo instrumenta. Ryad rabot posvyashen teoreticheskoi astronomii. Predlozhil dva novyh metoda opredeleniya kometnyh orbit, rassmotrel chislo reshenii pri opredelenii orbit po sposobam K. F. Gaussa i G. V. Ol'bersa. [140]

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