フラムスティード番号
ξ Scorpii (Latinized to Xi Scorpii) is the star's Bayer designation. Xi Scorpii has no proper name, though it was erroneously known as "Graffias" before that name was applied to Beta Scorpii. Its Flamsteed designation is "51 Librae". When the modern constellation boundaries were drawn, Xi Scorpii was assigned to Scorpius, and the Flamsteed designation fell out of use.