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The Moon has no spin it's value is zero. The same result is in spherical Harmonics for n=1 and in QUANTUM MECHANICS FOR THE FIRST ELECTRON IN THE BOHR ORBIT S = 0 (zero intrinsic spin) The same result for Mercury (first join) the first moon of Mars ( first join) and the first moon of Jupiter, and so on.
I thought the Moon was made of cheese, it's not a green apple.
Quote from: A Davis on 10/03/2009 16:03:28I thought the Moon was made of cheese, it's not a green apple.Now you are contradicting another well known fact.
The books on planets use the word synchronous spin for a moon that always faces a planet, I prefer the word no spin.
The Moon makes a complete orbit around the Earth with respect to the fixed stars (its sidereal period) about once every 27.3 days. However, since the Earth is moving in its orbit about the Sun at the same time, it takes slightly longer for the Moon to show its same phase to Earth, which is about 29.5 days (its synodic period).