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南船二

船底座PP
Diagram showing star positions and boundaries of the Carina constellation and its surroundings船底座
观测资料
历元 J2000.0
星座 船底座
星官 南船近南极星区
赤经 10h 32m 01.46297s
赤纬 –61° 41′ 07.1963″
视星等(V) +3.22
特性
光谱分类B2V
U−B 色指数-0.72[1][2]
B−V 色指数-0.09[1][2]
R−I 色指数-0.07[1][2]
变星类型仙后座γ变星
天体测定
径向速度 (Rv)+26.0 km/s
自行 (μ) 赤经:–17.01 mas/yr
赤纬:+11.50 mas/yr
视差 (π)6.5 ± 0.40 mas
距离500 ± 30 ly
(154 ± 9 pc)
绝对星等 (MV)-2.75
详细资料
质量15 ± 0.1 M
半径7.7 R
表面重力 (log g)3.52
亮度6,500 L
温度22,000 K
自转速度 (v sin i)325 km/s
年龄20 ± 7.6 Myr
其他命名
CP-61 1704,SAO 251006,HD 91465,HR 4140
参考数据库
SIMBAD资料

船底座PP是一个位于南天星座船底座恒星变星命名法。它有拜耳命名法船底座p(p Car),视星等3.22,很容易用肉眼在南半球看见。经由地球绕太阳公转产生的视差,估计该星距离为510光年。

船底座PP是一个恒星分类B2Vne的B型主序星。后缀ne代表这是一个被炽热气体包围的高速旋转Be星。这使得该星光谱上增加了发射线。它的恒星自转速度为325km/s,有大约15倍太阳质量和7.7倍太阳半径。这个恒星被分类为仙后座γ变星,亮度在3.22到3.37之间变化。

参考文献

  1. ^ 1.0 1.1 1.2 引用错误:没有为名为SIMBAD的参考文献提供内容
  2. ^ 2.0 2.1 2.2 引用错误:没有为名为DATA的参考文献提供内容
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南船二
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