The geography of the heavens, and class-book of astronomy: accompanied by a celestial atlas (1873)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, ed, Whitall, Henry, 1819-1887? Celestial planisphere · New York, Sheldon & company · leaf 234
It is oovious from this figure, that the mere distant an exterior planet is, and the slower It moves, the less will be its arc of retrogradation, and the longer will it be retrograding. Neptune appears to retrograde 180 days, or nearly half the year.The following table exhibits the amount of arc… … The right-hand figure represents Mars as seen at the Cincinnati Observatory, August 5,1845. On the 30th of the same month he appeared as represented on the left, lnemiddle view is from a drawing by Dr. Dick. 46T. The telescopic phenomena of Mars afford peculiar interestto astronomers. They behold…
Constellations · Stars
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