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鳶尾花星雲

鳶尾花星雲
鳶尾花星雲 (NGC 7023和LBN487)
觀測資料:曆元 J2000.0
類型反射
赤经21h 01m 35.60s
赤纬+68° 10′ 10.0"
距離1,300 ly
视星等(V)6.8
視大小(V)18' x 18'
星座仙王座
物理性質
半径3 ly
其他名稱NGC 7023和LBN487, Caldwell 4
參見:弥漫星云星雲列表

鳶尾花星雲,也稱為NGC 7023Caldwell 4,是位於仙王座的一個明亮反射星雲科德韋爾天體。NGC 7023其實是存在於LBN 487星雲之內的一個星團,並被一顆+7等的恆星SAO 19158所照亮[1]。鳶尾花星雲的亮度為+6.8,位置接近米拉型變星仙王座T和+3.23等的明亮變星仙王座β (上衛增一)。它與地球的距離約1,300光年,直徑大約6光年[2]

註解

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  1. ^ Perkins, Philip. NGC 7023. astrocruise.com. 2005 [2008-08-06]. (原始内容存档于2008-05-18). 
  2. ^ Nemiroff, Robert; Bonnell, Jerry. APOD: 2004 November 4 - NGC 7023: The Iris Nebula. APOD (NASA). 2004-11-04 [2008-08-06]. (原始内容存档于2016-04-11). 

參考資料

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外部連結

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鳶尾花星雲
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