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

Yaponskii astronom, chlen Yaponskoi akademii (1925). R. v Kazanave (prefektura Ishikava). V 1892 okonchil Tokiiskii un-t. V 1896, 1897 uchastvoval v nablyudeniyah polnyh solnechnyh zatmenii. Osnovatel' i direktor v 1899-1941 Mezhdunarodnoi shirotnoi stancii v Midzusave. V 1922-1936 - rukovoditel' Central'nogo byuro Mezhdunarodnoi sluzhby shiroty.

Osnovnye nauchnye raboty posvyasheny issledovaniyu dvizheniya polyusov Zemli i kolebanii shirot. V 1902 pri obrabotke nablyudenii Mezhdunarodnoi sluzhby shiroty pervym predlozhil vvesti v formulu dlya opredeleniya koordinat polyusa Zemli eshe odin chlen, odinakovyi dlya vseh stancii nablyudenii i ne zavisyashii ot ih koordinat, - obshee godovoe kolebanie (tak nazyvaemyi chlen Kimury, ili z-chlen). Proishozhdenie ego pytayutsya ob'yasnit' celym ryadom prichin, v tom chisle i oshibkami sklonenii zvezd, odnako edinogo mneniya na etot schet net i v nastoyashee vremya.

Prezident Komissii N 19 «Izuchenie kolebanii shirot» Mezhdunarodnogo astronomicheskogo soyuza (1919-1935).

Zolotaya medal' Londonskogo korolevskogo astronomicheskogo ob-va (1936).

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