A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 51
c period. The synodic period would be the trueperiodic time if the earth were at rest; but the earth is moving in itsorbit in the same direction as the planet, with a velocity less than that * From the Greek wordspathway. meaning together, and odos, which means a Questions.—62. What is the synodic… … I SYNODIC PEEIOD. INFEEIOB PLANETS. of the inferior planets and greater than that of the superior. Hence,the synodic period of an inferior planet must always be greater thanthe periodic time, while that of the superior planets is generally less. The diagram represents Venus at V1in inferior…
Astronomy
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