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Messier Object 103 (Site not responding. Last check: 2007-06-10) |
 | | Open cluster M103 is one of the "latest additions" (together with M101 and 102) to his catalog, which Charles Messier included from Pierre Méchain 's report, but had no occasion and no time to observe before publication. |
 | | Harlow Shapley, who classified M103 as a loose and poor cluster, and thus classified it as of type 'd', once doubted its existance and considered it may be just an accidental grouping of physically unrelated stars at different distances. |
 | | M103 is one of the more remote open clusters in Messier's catalog, at about 8,000 light years (Wallenquist, Mallas/Kreimer, Burnham) or slightly more; the Sky Catalogue 2000.0 gives 8,500 (quoted also e.g. |
| www.moonguy.com /messier/m/m103.html (567 words) |
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