Draconic Month

draconic month -- the time it takes for the Moon to return to a node (about 27.2 days). eclipse -- the alignment of celestial bodies so that one is obscured, either partially or totally, by the other.

* approximately 242 draconic months (the period of the Moon to return to the ascending node of its orbit, i.e. cross the plane of Earth's orbit twice) * 239 anomalistic months (period of the Moon to return to its perigee, i.e.

The Saros cycle of 18 years 11 days 8 hours is very useful for predicting the times at which nearly identical eclipses will occur, and is intimately related to three periodicities of the lunar orbit: the synodic month, the draconic month, ...

the moon in passing from one perigee to the next; the sidereal month is the mean time in which the moon makes a circuit among the stars; the tropical month is the mean time in which the moon traverses 360° of longitude; the nodical or draconic month ...

223 synodic months (6585.321 days) almost equal 242 draconic months (6585.357 days), a period of 18 years 10 and 1/3 (or 11 and 1/3) days -- depending on the number of intervening leap years.

Draconic month: the interval between two successive passages of the Moon through the same node of its orbit. Anomalistic month: the time between successive perigee passages of the Moon.

The interval of time (27.2122 days) between two successive transits of the Moon through its ascending node. (also called Draconic month) Noether's Theorem ...

annihilation of a quark and an antiquark, thereby producing a high energy or high momentum photon, W or Z boson. [D89] Draconic Month see Nodical Month. [H76] Drift Curves ...

on the Moon's motion, and they make a complete circuit every 18.6 years. This means that the time between each passage of the Moon through the ascending node is slightly shorter than the sidereal month. This period is called the draconic month.

See also: Solar, Period, Month, Earth, Moon