附近星空(赤道坐标,上北下南),在星图里打开

恒星 › 天蝎座

罚增二

天蝎座 ψ
视星等
4.93肉眼可见
绝对星等
1.54
距离
156 光年47.7 秒差距
光谱型
A3IVA 型(白)
色指数 B−V
0.09
光度
21.1太阳 = 1
赤经(J2000)
16h 11m 60.0s
赤纬(J2000)
−10° 03′ 51″
所在星座
天蝎座
视向速度
-6.0 km/s
自行
赤经 -21.9、赤纬 -27.9 毫角秒 / 年
中国古星名
罚增二
拜耳 / 弗兰斯蒂德名
天蝎座 ψ
编号
HIP 79375 · HD 145570 · HR 6031

百科

中文维基百科没有这个条目,下面是英文维基百科的原文。

Psi Scorpii, which is Latinized from ψ Scorpii, is a binary star in the zodiac constellation of Scorpius. It is white in hue and has an apparent visual magnitude of 4.94, which is bright enough to be faintly visible to the naked eye. Based upon parallax measurements, it is located at a distance of around 162 light years from the Sun. The system is drifting closer to the Sun with a radial velocity of −5 km/s.

Characteristics

Data collected during the Hipparcos mission suggested it is an astrometric binary. The companion was directly detected in 2025, with the GRAVITY instrument at VLTI. The astrometric data is consistent with an orbital period of 10 years, suggesting a separation of 3.4 astronomical units.

The primary component is an A-type main sequence star with a stellar classification of A1 V; a class of star that is still fusing hydrogen at its core. It has around 1.95 the mass and 2.1 times the radius of the Sun, and is shining with 18.6 times the Sun's luminosity. The effective temperature of the star's outer atmosphere is 8,350 K. Psi Scorpii A is around 630 million years old and is spinning with a projected rotational velocity of 42.3 km/s.

The secondary has around 0.64 times the mass, 0.6 times the radius and a temperature of 4,200 K. It is 6.7 magnitudes fainter than the primary.

中文维基百科没有这个条目,以上取自英文维基百科「Psi Scorpii」(英文原文,未翻译),按 CC BY-SA 4.0 使用。

资料卡

类型
恒星、红外线光源、near-infrared source、ultraviolet source
质量
2太阳 = 1
半径
2.2太阳 = 1
年龄
4.51 亿年

数据来自 Wikidata(CC0),数值已换算成常用单位。

天蝎座里的其他亮星

整个星座 ›
名称星座星等距离光谱
心宿二天蝎座 α天蝎座1.06554 光年M1Ib + B2.5V
尾宿八天蝎座 λ天蝎座1.62571 光年B1.5IV+...
尾宿五天蝎座 θ天蝎座1.86300 光年F1II
房宿三天蝎座 δ天蝎座2.29491 光年B0.2IV
尾宿二天蝎座 ε天蝎座2.2963.7 光年K2IIIb
尾宿七天蝎座 κ天蝎座2.39483 光年B1.5III
房宿四天蝎座 β¹天蝎座2.56404 光年B0.5V
尾宿九天蝎座 υ天蝎座2.70576 光年B2IV
心宿三天蝎座 τ天蝎座2.82474 光年B0V
房宿一天蝎座 π天蝎座2.89586 光年B1V + B2V
心宿一天蝎座 σ天蝎座2.90697 光年B1III
尾宿六天蝎座 ι¹天蝎座2.991,930 光年F3Ia

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