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 155
he sidereal period ofan inferior planet: — 138 ASTRONOMY. Let a denote the synodical period of the planet. Let b denote the sidereal period of the earth, Let x denote the sidereal period of the planet. ^6o°Then will ^—j— — daily motion of the earth, AndAlsoButHence b36o° x3600 b ^6o° = daily °:ain… … S, e, and m, in Fig. 153, represent the relative positions of thesun, the earth, and Mars, when the latter planet is in opposi-tion. Let E and M represent the relative positions of theearth and Mars the day after opposition. At the first observa-tion Mars will be seen in the direction em A, and at…
Astronomy
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