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螣蛇十九

仙女座λ

仙女座λ位于右上部。
觀測資料
曆元 J2000
星座 仙女座
星官 室宿 螣蛇
赤經 23h 37m 33.8425s
赤緯 +46° 27' 29.347"'
視星等(V) 3.82
特性
光谱分类G8III
U−B 色指数0.69
B−V 色指数1.01
变星类型RS CVn type
天体测定
徑向速度 (Rv)6.8 km/s
自行 (μ) 赤经:159.22 mas/yr
赤纬:-421.46 mas/yr
视差 (π)38.74 ± 0.68 mas
距离84 ± 1 ly
(25.8 ± 0.5 pc)
绝对星等 (MV)4.9
詳細資料
質量1.1 M
半徑1.1 R
亮度1.2 L
溫度5.000–6.000 K
其他命名
FK5 890, LTT 16964, SAO 53204, BD+45° 4283, NLTT 57442, GJ 9832, HD 222107, HIP 116584, HR 8961.
參考資料庫
SIMBAD资料
參考資料庫
SIMBAD资料

螣蛇十九 (λ And / 仙女座λ)是仙女座的一个双星系统,距离地球约84.2光年

螣蛇十九为分光双星,绕行周期为20.52天。它的光谱类型为G型的黄巨星,平均视星等为+3.81。该双星系统也是猎犬座RS变星,亮度变化以54.2天的周期变化于+3.69到+3.97之间。

参考资料

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螣蛇十九
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