:Category:Messier objects

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Help keep this category in order, modify Category:Messier objects to add a sort key:

:; Articles with the Messier number in the title

:: use ###, dropping the M prefix, and using only the number. The number should be padded up to 3 digits using zeroes.

:; Articles without the Messier number in the title

:: use Category:Messier objects. A redirect containing the Messier number should also be added to the category, sorted as above.

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