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NGC 1647

NGC 1647
(palle)NGC 1647.jpg
觀測數據 (J2000 曆元)
星座金牛座
赤經04h 45m 55s[1]
赤緯±19° 06′ 54″[1]
距離1,800 光年 (平均) (550 秒差距[2])
視星等 (V)6.4 [1]
視直徑 (V)45'
物理性質
其他名稱(標示)Cr 54
相關條目:疏散星团疏散星團列表

NGC 1647是在金牛座的一個疏散星團,它擁有大約90顆恆星,與我們的距離為550秒差距[2]。當使用雙筒望遠鏡觀察畢宿五時,就能看見它。它是由威廉·赫歇爾於1784年發現的[3]。它位於金牛座暗星雲複合體的後面,兩者相距大約160秒差距。估計這個星團的年齡為1.5億年,最亮的恆星光譜型B7的主序星[4]

參考資料

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  1. ^ 1.0 1.1 1.2 NGC 1647. SIMBAD. 斯特拉斯堡天文資料中心. [2015-06-19]. 
  2. ^ 2.0 2.1 C. A. Guerrero; J. H. Peña; J. P. Sareyan. uvby-B Photoelectric Photometry of the Open Clusters NGC 1647 and NGC 1778. Revista Mexicana de Astronomía y Astrofísica. 2011, 47 (1): 185–192 [19 June 2015]. Bibcode:2011RMxAA..47..185G. (原始内容存档于2022-06-21). 
  3. ^ NGC/IC online - result for NGC 1647 互联网档案馆存檔,存档日期2012-05-20.
  4. ^ Zdanavičius, J.; Straižys, V.; Chen, C. W.; Chen, W. P.; Zdanavičius, K.; Kazlauskas, A.; et al. Seven-Color Photometry of the Open Cluster NGC 1647 Area. Baltic Astronomy. 2005, 14: 179–203. Bibcode:2005BaltA..14..179Z. 

外部連結

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NGC 1647
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