| | Babylonian Planetary Theory and the Heliocentric Concept |
 | | But while the latter all employed uniform circular motion and auxiliary devices of one sort or another to account for variations in planetary velocity, the Babylonians for their part appear to have determined fundamental period relationships subsequently applied in numerical schemes concerned with fixed, mean and varying orbital motion. |
 | | The attested subdivision of integer multiples of 360 degrees of uninterrupted sidereal motion by the number of synodic occurrences in the final Babylonian period relationships result in the determination of the mean synodic arcs. |
 | | The corresponding maximum, mean, and minimum synodic velocities for Jupiter were determined to be 38;02 degrees, 33;08,45 degrees and 28;15,30 degrees respectively, with a rate of change of velocity that was understood to increase (or decrease, depending on location) by 1;48 degrees per synodic cycle. |
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