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Messier catalogue

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Messier catalogue [ˈmɛsɪeɪ]
n
(Astronomy) Astronomy a catalogue of 103 nonstellar objects, such as nebulae and galaxies, prepared in 1781-86. An object is referred to by its number in this catalogue, for example the Andromeda Galaxy is referred to as M31
[named after Charles Messier (1730-1817), French astronomer]


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There is also a very interesting discussion of visual observers of objects now in the Messier catalogue, from before and after Messier and Mechain.
 
 
 
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