ADJ relating to or involving a conjunction or two successive conjunctions of the same star, planet, or satellite (天体)会合的
the synodic month
Its synodic period brings it into conjunction with the sun every398days and88minutes a little more than a year.
它与太阳关联的会合周期是398天零88分，比一年稍长一些。
It is approximately the LCM (lowest common multiple) of the synodic period (29.53 days), draconic period (27.21 days), and the anomalistic period (27.55 days) of the Moon.
沙罗周期日数约为朔望月周期（29.53 日）、 交点月周期（27.21 日） 和近点月周期（27.55 日） 的最小公倍数。
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