翻訳と辞書 Words near each other ・ Messier 28 ・ Messier 29 ・ Messier 3 ・ Messier 30 ・ Messier 32 ・ Messier 34 ・ Messier 35 ・ Messier 36 ・ Messier 37 ・ Messier 38 ・ Messier 39 ・ Messier 4 ・ Messier 41 ・ Messier 43 ・ Messier 46 ・ Messier 47 ・ Messier 48 ・ Messier 49 ・ Messier 5 ・ Messier 50 ・ Messier 52 ・ Messier 53 ・ Messier 54 ・ Messier 55 ・ Messier 56 ・ Messier 58 ・ Messier 59 ・ Messier 60 ・ Messier 61 ・ Messier 62 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Messier 47 ： ウィキペディア英語版 Messier 47 Messier 47 (Messier Object 47, M47, or NGC 2422) is an open cluster in the constellation Puppis. It was discovered by Giovanni Batista Hodierna before 1654 and independently discovered by Charles Messier on February 19, 1771. It was later independently discovered again, under the current name NGC 2422. There is actually no cluster in the position indicated by Messier, which he expressed in terms of its right ascension and declination with respect to the star 2 Puppis. However, if the signs of Messier's coordinate differences are changed, the position matches that of NGC 2422. Until the equivalency of M47 with NGC2422 was found, M47 was considered a lost Messier Object. The discovery that M47 and NGC2422 were the same cluster only came in 1959 with a realization by Canadian astronomer T. F. Morris.〔 〕 M47 is at a distance of about 1,600 light-years from Earth with an estimated age of about 78 million years.〔 There are about 50 stars in this cluster,〔 the brightest one being of magnitude +5.7. M47 is located relatively close in the sky to Messier 46, which is much older and much further away.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Messier 47」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.