A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 133
of Mars; and the remain-der grow smaller as they are nearer the primary. Theyare seldom eclipsed, on account of the great inclinationof their orbits to the ecliptic, except twice in thirty years,when the rings are edgewise toward the sun. The eighthsatellite, which has been studied more than all… … 1. Let the line A B represent theplane of the planets orbit, C D hisaxis, and E F the plane of his rings.The satellites being in the plane of therings, will revolve around the shadowof the primary, instead of passingthrough it, and being eclipsed. 2. At the time of his equinoxes, how-ever, when the…
Astronomy
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