The latter three periods are slightly different from the sidereal month.
2.
This is known as the sidereal month.
3.
After one nodal precession period, the number of draconic months exceeds the number of sidereal months by exactly one.
4.
There will of course be similar trajectories with periods of about two sidereal months, three sidereal months, and so on.
5.
There will of course be similar trajectories with periods of about two sidereal months, three sidereal months, and so on.
6.
The time between one perigee and the next is slightly longer than the sidereal month and known as the anomalistic month.
7.
You've also got your sidereal month, your tropical month and your draconic ( or nodical ) month ( you could look them up ).
8.
After completing a sidereal month the Moon must move a little further to reach the new position having the same angular distance from the Sun.
9.
A synodic month is longer than a sidereal month because the Earth-Moon system is orbiting the Sun in the same direction as the Moon is orbiting the Earth.
10.
A draconic month is shorter than a sidereal month because the nodes move in the opposite direction as the Moon is orbiting the Earth, one revolution in 18.6 years.
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