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| | Messier Object 73 (Site not responding. Last check: 2007-10-22) |
 | | Although M73 is apparently consisted of 4 stars, 3 of them being of about 10th to 11th magnitude (Burnham and Kenneth Glyn Jones give A:10.5, B:10.5, and C:11.0), the fourth (D) being of mag 12.0, it is obviously a true Messier object, as Charles Messier described it as |
 | | Although it is clear from this description that this group was what Messier had observed and measured, some versions of Messier's catalog omit it as an "obscure" object, however John Herschel has included it in his General Catalogue as GC 4617, and J.L.E. Dreyer included it in the NGC catalog as entry number 6994. |
 | | What remains to clear up to now, at least to the knowledge of the present author, is the check if the 4 stars in M73, or at least some of them, are physically related. |
| astronomy.nju.edu.cn /astron/Messier/m073.html (577 words) |
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