A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 132
of his departurefrom the plane of the rings, as shown in the cut. URANUS. 274. Uranus is supposed to be attended by six secon-daries. Sir Win. Herschel recorded that he saw thisnumber, and computed their periods and distances ; andon his authority the opinion is generally received, though 273. Size… … NATURE AND CAUSE OF TIDES. 129 no other observer has ever been able to discover morethan three. They are situated at various distances, andrevolve in from 1 day and 21 hours to 117 days. Theirorbits are nearly perpendicular to the ecliptic, and theyrevolve backward, or from east to west, contrary…
Astronomy
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