Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 248
owing to the greateccentricity of its orbit, its distance from the sun varies from about forty-three million milesat aphelion toabout twenty-eightmillion at perihe-lion. 217. Distance ofMercury from theEarth. — It is evi-dent, from Fig.251, that an infe-rior planet, likeMercury, is thewhole… … Freia Fig. 249. 226 ASTRONOMY. from the earth at inferior conjunction also varies considera-bly. Mercury is nearest to the earth when its inferiorconjunction occurs at its own aphelion and at the earthsperihelion. 218. Apparent Size of Mercury. — Since Mercurys dis-tance from the earth is variable,…
Astronomy
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