Puzzle about the moon's orbit

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Puzzle about the moon's orbit

#1  Postby felltoearth » Aug 26, 2017 12:38 am

This is something that made me go hmmmm tonight. The moon's orbit is prograde with respect to the earth's rotation however tonight I noticed that the moon was setting after the sun at a significant angular distance.
Now, the eclipse just happened so I would expect that if the moon is prograde in orbit that it would set before the sun after an eclipse.
The only thing I can think of is that the earths rotation around the sun actually outpaces the moon's orbit. But I can't get the math to work in my head.
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Re: Puzzle about the moon's orbit

#2  Postby Pulsar » Aug 26, 2017 1:23 am

Image

The Moon is now a waxing crescent, which means that the Sun will rise before the Moon, and it will set before the Moon.
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Re: Puzzle about the moon's orbit

#3  Postby laklak » Aug 26, 2017 1:24 am

Goddidit.
A man who carries a cat by the tail learns something he can learn in no other way. - Mark Twain
The sky is falling! The sky is falling! - Chicken Little
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Re: Puzzle about the moon's orbit

#4  Postby felltoearth » Aug 26, 2017 2:19 am

Pulsar wrote:Image

The Moon is now a waxing crescent, which means that the Sun will rise before the Moon, and it will set before the Moon.

Diagram is 100% clear! Thanks!

Shortest thread ever.
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Re: Puzzle about the moon's orbit

#5  Postby felltoearth » Aug 26, 2017 2:19 am

laklak wrote:Goddidit.

Yep. You can't explain that.
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