Based upon parallax measurements, this system is at a distance of roughly 260 light-years (80 parsecs) from the Sun, with a 2% margin of error.

[21] Consequently, the Chinese name for σ Librae is 折威七 (Shé Wēi qī, English: the Seventh Star of Executions).

[22] The primary, Sigma Librae A, has a spectral class M2.5 III,[3] which places it in the red giant stage of its evolution.

[7] It shows small amplitude variations in magnitude of 0.10–0.15 on time scales as brief as 15–20 minutes, with cycles of repetition over intervals of 2.5–3.0 hours.

[24] This form of variability indicates that the star is on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium within concentric shells surrounding an inert core of carbon and oxygen.