The geography of the heavens, and class-book of astronomy: (1858)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 202
centricity of theEarths orbit is about one and a half millions of miles; hence she is 3,000,000 of miles,nearer the Sun in her perihelion, than in her aphelion. Hvow as the Sun remains fixed in the lower focus of the Earths orbit, it is easy to per-ceive that a line, passing centrally through the… … 398. What is the true form of the planets orbits ? Why is equinoctial time irregular?J9. How is the Earths orbit divided by the equinoctial? h. m. d. h. m. 2114 19)1 f 183 11 19 IT1 IT i 13] 1T8 18 30 202 ASTRONOMY. Sun, or north of the equinoctial, contains about 184 degrees ,while that portion of…
Constellations · Stars
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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-217-133.webp)
