Peck, William G. (William Guy), 1820-1892 · New York, Chicago, A. S. Barnes & company · leaf 252
vectores de-scribe areas which are proportional to the times of descrip-tion, and the squares of their times of revolution are pro-portional to the cubes of their mean distances from thecentral body. The planes of their orbits are nearly coinci-dent with that of the planet, and are consequently… … Fig. 92. Jupiter and bis Satellites. Being at different distances from the planet, their greatestelongations as well as their apparent times of oscillationare different from each other; sometimes they are seenlying in a line parallel to the ecliptic, some on one side andsome on the other ;…
Astronomy
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