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Hello there!
We know that in geocentric reference, Moon's trajectory is roughly a circle and moves at a mean speed of 3680km/hour.
But, from a heliocentric frame of reference,
Moon's trajectory in 1 sideral period isn't a circle but a curvature.
[PLAIN]http://img22.imageshack.us/img22/6411/mmneg.jpg [Broken]
Since Moon's circle orbit revolves around the Sun as the Moon revolves around our planet,
Moon's speed from Sun's viewpoint may be different from 3680km/h.
So, my question is:
how long is this curvature in km? What's the MEAN speed of the Moon in heliocentric reference?
Thank you
We know that in geocentric reference, Moon's trajectory is roughly a circle and moves at a mean speed of 3680km/hour.
But, from a heliocentric frame of reference,
Moon's trajectory in 1 sideral period isn't a circle but a curvature.
[PLAIN]http://img22.imageshack.us/img22/6411/mmneg.jpg [Broken]
Since Moon's circle orbit revolves around the Sun as the Moon revolves around our planet,
Moon's speed from Sun's viewpoint may be different from 3680km/h.
So, my question is:
how long is this curvature in km? What's the MEAN speed of the Moon in heliocentric reference?
Thank you
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