Tags: Star.
Sigma Librae (σ Lib σ Librae) is a star in the constellation Libra. It has the traditional names Brachium (ArmLatin) Cornu (HornLatin) and Zubenalgubi (Southern ClawArabic). The apparent visual magnitude is +3.29 making it a third magnitude star that is visible to the naked eye. Based upon parallax measurements this star is at a distance of roughly 288 light-years (88 parsecs) from Earth with a 2% margin of error.
