An introduction to astronomy : designed as a text book for the students of Yale College (1846)
Olmsted, Denison, 1791-1859, Yale College (1718-1887) · New York : Collins, Brother & Co. · leaf 176
itude corresponding to the instant of opposition, andto one hour later; and we may take also the suns and moonshourly motions in longitude. Take AD, AB, each equal to therelative motion, and Aa=the latitude in opposition, Dd=ihe lati- * It will be remarked that the point A really represents the… … tude one hour afterwards; join da and produce the Hne da bothways, and it will represent the moons relative orbit. Draw B6at right angles to CD, and it will be the latitude an hour beforeopposition. At the time of the eclipse, the apparent distance ofthe center of the shadow from the moon is very…
Astronomy
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