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Celestial scenery, or, The Wonders of the planetary system displayed : illustrating the perfections of deity and a plurality of worlds (1845)

Dick, Thomas, 1774-1857, Parker, E. S., former owner. DSI, David H. DeVorkin Collection (Smithsonian Institution. Libraries) DSI · Philadelphia : Published by Edward C. Biddle · leaf 75

An illustration from Celestial scenery, or, The Wonders of the planetary system displayed : illustrating the perfections of deity and a plurality of worlds, 1845, leaf 75
eding to a more particular description of thisplanet, I shall lay before the reader a brief explanation of thenature of the planetary orbits, as I may have occasion to referto certain particulars connected with them in the followingdescriptions. All the planets and their satellites move… … orbit, which is that of an oval or ellipse. The longest diameteris A B ; the shorter diameter D E. The two points F and Gare called the foci of the ellipse, around which, as two centralpoints, the ellipse is formed. The sun is not placed in C, thecentre of the orbit, but at F, one of the foci of…

Astronomy

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