15 1829(1829-10-15)
, ,
22 1907(1907-11-22) (78 )
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(. Asaph Hall; 15 1829, , 22 1907, , ) . ( ), ( -), . 18571862 , 1862 , 1863 1891 - . 18981903 .
1876 . 1877 , . 1892 , 61 . .
