Also known as HR 5267, HIP 68702, HIC 68702, HD 122451, Agena, Hadar, β Cen, β Centauri
star system in the southern constellation of Centaurus
Beta Centauri is a bright star system located in the Centaurus constellation in the southern sky. It is one of the notable stars in that region and serves as an important reference point for observers studying the southern celestial sphere.
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马腹一(半人马座β,简称Beta Cen、β Cen)是一颗视星等为0.61的恒星,位于半人马座。其为恆星亮度列表中第12亮的恒星,亦是该星座第二亮的恒星(第一为南门二)。不过据现代观测手段,马腹一实为由多颗恒星组成的恆星系統。据依巴谷卫星所测量的视差计算,该系统距太阳系约为390光年(120秒差距)。 人们常用马腹一来寻找南十字座,进而确定方位。其与南门二所组成的连线指向南十字座的顶端——十字架一,而十字架一与十字架的底端——十字架二所组成的连线则指向南天极。 该天体于北纬30°以北均不可见。在中国只有部分南方省市能够观测到,其最佳观测时间为4月至5月。
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).