M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967. ==Lists and editions== The first edition of 1774 covered 45 objects (M1 to M45).
Eighteen of the objects were discovered by Messier, the rest being previously observed by other astronomers. By 1780 the catalogue had increased to 70 objects.
The final version of the catalogue containing 103 objects was published in 1781 in the Connaissance des Temps for the year 1784. However, due to what was thought for a long time to be the incorrect addition of Messier 102, the total number remained 102.
Further inclusions followed, the first addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding Messier's side note in his 1781 edition exemplar of the catalogue.
The total list published by Messier in 1781 contained 103 objects, but the list was expanded through successive additions by other astronomers, motivated by notes in Messier's and Méchain's texts indicating that at least one of them knew of the additional objects.
The first such addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding a note Messier made in a copy of the 1781 edition of the catalogue.
The final version of the catalogue containing 103 objects was published in 1781 in the Connaissance des Temps for the year 1784. However, due to what was thought for a long time to be the incorrect addition of Messier 102, the total number remained 102.
Further inclusions followed, the first addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding Messier's side note in his 1781 edition exemplar of the catalogue.
The first such addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding a note Messier made in a copy of the 1781 edition of the catalogue.
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967. ==Lists and editions== The first edition of 1774 covered 45 objects (M1 to M45).
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967.
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967. ==Lists and editions== The first edition of 1774 covered 45 objects (M1 to M45).
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967.
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967. ==Lists and editions== The first edition of 1774 covered 45 objects (M1 to M45).
M 105 to M 107 were added by Helen Sawyer Hogg in 1947, M 108 and M 109 by Owen Gingerich in 1960, and M 110 by Kenneth Glyn Jones in 1967.
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