Moon's Orbit

The nodes are points at which the Moon's orbit crosses the ecliptic. The Moon crosses the same node every 27.2122 days, an interval called the draconic month.

[DasParedes]

thank you for the animation. This is exactly the type of explaination that i was in search, although an complex and difficulty topic, i could make my head around understand enough to satisfy my curiosity of why we don't have eclipses twice an year.

[sanjayyashwantsohani]

Yes I was searching for this kind of animation.Was finding hard to imagine how eclipses occure.

[markbolles]

This is the shortest of the four types of months: Draconic, Sidereal, Tropical, and Synodic. This Draconic month is the time it takes for the moon to go from one node back to meet that same node again. It is a short month because the nodes precess, or move opposite to the Moon's direction letting them run into each other a little before the Moon has completed one full revolution of the Earth with respect to the background of stars. That's the Sidereal month.

[griffintroster]

I am confused.. Isn´t the moon´s plane of orbit in relation to both the ecliptic AND the ecuatorial plane fixed?

[BrandoDennis]

God Thank you this is excactly what I needed!!!

[Tndat]

thank you, I am searching for this animation

[joekavanagh]

Your animation has many good points. The number of moon orbits of 12 per year is about right.
But: 1. the earth is show spinning at 1/10 the rate it should. The earth is show n only revolving ~36 times in its orbit round the sun.
The background starfield should be that of the Autumn showing Pisces and Pegasus.
The depiction of 18.75 year cycle of the precession of the lunar orbit shown at the Autumn Equinox is strange the revolutions of the earth in that compressed timeframe should be a blur. The number of lunar orbits in 18.75 years is 229 . 229 orbits in 30 seconds is about 7 per second!

[venkataramanaupadhya]

This is a good dream like animation. Thank you very much.

[nailicis]

Absolutely phenomenal animations! How does this 18.6 year cycle affect the tides? I'm having a very hard time visualizing it (in the context of the new NASA study about the moon's cycle contributing to coastal flooding in the 2030s)

[flippert]

A full procession of the moon's orbit (the 18.6 years) is called a "Metonic cycle" and was well known already in ancient times.

[DrTWG]

Good animation albeit simplified model - the common M/E orbit is the barycentre of course - and we rotate around it.

[ASLconteudos.]

Como podemos ver a lua de dia pela manhã nessa computação gráfica?

[operaflute]

In the animation, it looks like the nodes aren’t actually always positioned on the points of intersection of the two planes? What am I missing here?

[brentreimann]

Why is there a skull and crossbones moving around with the moon?

[wardogies]

The moons orbit is only tilted 5.05° the earth orbit around the sun not the earths axial tilt

[schooldadwinchester]

Thank you for this. Would only add the yellow line moving up and down for the solstices and equinox.

[FonsecaStatter]

Thanks for you presentation... But it is much better without the sound and with 0, 25 speed...

[leonardleija]

So does the moon spin on its on axis's? I thought they were tidal locked with each other. The earth and moon should both be spinning in your animation but only the earth is rotating on its axis's.

[dorothyrobb]

The visual of the simulation is exceptional. The Earth's rotation though to me seems slower than what I'm imagining it ought to be...?

[theinvisible]

what software was used to make this model? Nice job