孔雀十一
Multi tool use
孔雀十一
 孔雀十一是孔雀座的α星.
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觀測資料
曆元 J2000
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星座
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孔雀座
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星官
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孔雀（近南极星区）
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赤經
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20h 25m 38.9s
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赤緯
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−56° 44′ 06″
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視星等（V）
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1.94
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| 特性 |
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| 光谱分类 |
B2 IV |
| U−B 色指数 |
−0.71 |
| B−V 色指数 |
−0.20 |
| 变星类型 |
? |
| 天体测定 |
|---|
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| 径向速度 (Rv) |
2 km/s |
| 自行 (μ) |
赤经：7.71 mas/yr
赤纬：−86.15 mas/yr |
| 视差 (π) |
17.8 ± 0.7 mas
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| 距离 |
183 ± 7 ly
(56 ± 2 pc) |
| 绝对星等 (MV) |
−1.81 |
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詳細資料
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| 質量 |
8.9-9.1 M☉
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| 半徑 |
4.23 R☉
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| 亮度 |
35,60 L☉
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| 溫度 |
22,100 K
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| 金屬量 |
? |
| 自轉 |
39 km/s |
| 年齡 |
? 年
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其他命名
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HR 7790, CD -57°9674, HD 193924, SAO 246574, FK5 764, HIP 100751
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參考資料庫
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SIMBAD
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data
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孔雀十一(α Pav / 孔雀座α)是孔雀座的最亮星，又称为孔雀星，亮度1.9等。孔雀十一是一颗分光雙星。
它在20世纪30年代后期由英國航海星曆局（HM Nautical Almanac Office）为皇家空军发行的航空星曆中被命名。在这本包含57个恒星的新航空星曆中，有2颗恒星没有经典的命名：海石一（船底座ε）和孔雀十一（孔雀座α）。但皇家空军坚持所有的恒星必须有专名，因此创造了两个新名称：孔雀座α被命名为孔雀，同时船底座ε被命名为Avior。[1]
注释
^ Sadler, D.H.: "A Personal History of H.M. Nautical Almanac Office", page 46. Edited and privately published by Wilkins, G.A., 1993
外部链接
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