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白羊座τ¹

白羊座τ¹
τ1 Arietis
观测资料
历元 J2000
星座 白羊座
星官
赤经 03h 21m 13.6245s
赤纬 +21° 08′ 49.51″
视星等(V) 5.301
特性
光谱分类B5IV
U−B 色指数-0.52
B−V 色指数-0.07
变星类型食双星
天体测定
径向速度 (Rv)13.9 km/s
自行 (μ) 赤经:21.68 mas/yr
赤纬:-22.41 mas/yr
视差 (π)7.06 ± 1.03 mas
距离approx. 460 ly
(approx. 140 pc)
绝对星等 (MV)5.227
详细资料
质量18 M
半径7 R
亮度20,000 L
温度10,000–30,000 K
自转20 Km/s
0,048579 Year
轨道
伴星CCDM 03212+2109 B
半长轴 (a)0,7"
倾斜角 (i)230°
其他命名
61 Arietis, HR 1005, HD 20756, BD+20°543, FK5 1094, HIP 15627, SAO 75886, GC 4007, CCDM 03212+2109.
参考数据库
SIMBAD资料

白羊座τ¹τ1 Ari, τ1 Arietis)是一个位于白羊座恒星系统,距离地球约462光年

白羊座τ¹的主星即白羊座τ¹A是一颗食双星,被分类为蓝白色B-型次巨星。组成白羊座τ¹A的两颗恒星视星等分别为5.4和+7.9,在天球的距离为0.15角秒。白羊座τ¹B离白羊座τ¹A0.67角秒,视星等为+8.4。这个恒星系统的平均视星等为+5.27,在+5.26至+5.32之间变化。

参考资料

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白羊座τ¹
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