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Cleomedes' Lectures on AstronomyA Translation of  The Heavens$
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Cleomedes and Lawrence Witmer

Print publication date: 2004

Print ISBN-13: 9780520233256

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520233256.001.0001

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Chapter Seven1

Chapter Seven1

(p.164) Chapter Seven1
Cleomedes' Lectures on Astronomy

Alan C. Bowen

Robert B. Todd

University of California Press

This chapter addresses the extremal latitudes of the planets, the maximum elongation of the inner planets, and the planetary periods. The Moon is said to move a greater distance than do the other planets toward each [side] of the circle through the middle of the zodiacal constellations; next in order is Venus, which goes five degrees to each [side] in its chosen motion, then Mercury (up to four degrees), Mars and Jupiter (up to two-and-a-half degrees), [and] Saturn (up to one degree on each side). Mercury effects [superior] conjunction with the Sun in 116 days when the latter comes in between it [and the Earth]; Venus resumes the same position in relation to the Sun in 584 days, Mars in 780 days, Jupiter in 398, Saturn in 378.

Keywords:   Moon, Sun, Mars, Jupiter, Venus, Saturn, Mercury

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