A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 84
the same amount. So far as thesolid portions of the earth would permit, it would at oncebecome a perfect sphere. (See page 17, and also Art. 153and note.) 157. It has already been stated (77), that the orbits ofall the planets were ellipses ; but they are not all alikeeccentric. The orbit of… … 80 ASTKONOMY. that of Venus is nearly a circle. The student shouldobserve that the eccentricity is not the deviation from acircle, but the distance from the center of an ellipse toeither foci (see page 23 and cuts). The eccentricity of the orbits of the principal planets is as follows: Miles.…
Astronomy
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-162-91.webp)
