A new treatise on astronomy, and the use of globes : in two parts ... (1866)
M'Intire, James, 1799-1879 · New York : Published by A.S. Barnes & Burr ... · leaf 122
tance of the planet from one of thenodes of the ring. Let S represent the sun, ah c d the orbit of the earth, andA B C D the orbit of Saturn. If A and C be the nodes ofthe ring, it is evident that when the planet is at A or 0, theplane of the ring will pass through the sun, and hence, theedge will… … According to what will its eccentricity vary ? Draw the diagram, andshow the difierent apparent forms of the ring. 116 ASTRONOMY. As the planet advances in the orbit from A or C, the illumi-nated plane of the ring will become more visible ; and when atB or D 90° from the node A or C, the ring will…
Astronomy
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