Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt · leaf 330
of the question)be the least distance of the planet from the earth, while thesecond point (7, or the point ofsuperior conjunction, on the op-posite side of the sun, will bethe greatest distance. Owing tothe difference of these distances,the apparent magnitude of theseplanets, as seen from the… … Fig. 85.—apparent magni-tudes OF THE DISK OFMERCURY. ^^^^■^^^^M 312 ASTRONOMY. least distance. In the case of Venus (Fig. 86) the varia*tions are much greater than in that of Mercury, the great-est distance, 1-72, being more than six times the leastdistance, which is only 0 • 28. The variations of…
Astronomy
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