A compendium of astronomy; containing the elements of the science, familiarly explained and illustrated, with the latest discoveries. Adapted to the use of schools and academies, and of the general reader (1850)
Olmsted, Denison, 1791-1859 · New York, R. B. Collins · leaf 189
°. Mercury,v...ferent distances from the earth, varies much in his appa-rent diameter, which is only 5 in the apogee but 12in the perigee. The inclination of his orbit to his equa-tor being very great, the changes of his seasons must beproportionally great. These different aspects of an inferior… … and the placet is represented in various positions in itsrevolutions around the sun. When at A, in the supe-rior conjunction, the whole enlightened disk is turnedtowards us ; at D, in the inferior conjunction, the en-lightened side is turned entirely from us ; and at thequadratures B and C, half…
Astronomy
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