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鳖一

鳖一
Diagram showing star positions and boundaries of the Telescopium constellation and its surroundings
望远镜座α的位置 (红圈处)
观测资料
历元 J2000.0
星座 望远镜座[1][2]
星官
赤经 18h 26m 58.4s[1][2]
赤纬 -45° 58′ 06.4″[1][2]
视星等(V) 3.51
特性
光谱分类B3V
U−B 色指数-0.64
B−V 色指数-0.17
变星类型SPB
天体测定
径向速度 (Rv)−0.2 km/s
自行 (μ) 赤经:−16.95 mas/yr
赤纬:−53.09 mas/yr
视差 (π)11.74 ± 0.17 mas
距离278 ± 4 ly
(85 ± 1 pc)
详细资料
质量5.6 M
半径3.8 R
亮度1000 L
温度16,700 ± 800 K
自转速度 (v sin i)14 ± 8 km/s
年龄24.1 ± 7.5 Myr
其他命名
CP-68 2822,SAO 253700,HD 150798,HR 6217
参考数据库
SIMBAD资料

鳖一α Tel / 望远镜座α)是望远镜座的最亮星,视星等3.51。托勒密把它放在南冕座里,但是在18世纪被拉卡伊移入新创造的望远镜座。视差测量它距离地球278光年

该星比太阳大很多,估计质量为5.6太阳和3.8太阳半径。该星的恒星分类为B3V,亮度分类'V'代表这是一个主序星,核心正在进行氢聚变。鳖一是个很亮的恒星,有将近1000太阳光度,表面温度16,700K,散发出蓝白色的光芒。

该星可能是属于慢脉动B型变星变星。投影恒星自转速度14km/s,对于这种类型的恒星相当缓慢,代表它的极区可能是对着我们。

参考文献

  1. ^ 1.0 1.1 1.2 Pulsating variable Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2012-07-13]. (原始内容存档于2019-11-29). 
  2. ^ 2.0 2.1 2.2 VizieR Detailed Page. [2012-07-13]. (原始内容存档于2016-03-05). 


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鳖一
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