Tags: Star.
Sigma Arae (σ Ara σ Arae) is the Bayer designation for a star in the southern constellation of Ara. It is visible to the naked eye with an apparent visual magnitude of +4.575. The distance to this star based upon an annual parallax shift of 8.62 mas is around 380 light-years (120 parsecs).This is an A-type main sequence star with a stellar classification of A0 V. Unusually for an A-type star X-ray emissions with a luminosity of 4.6 × 1029 erg s–1 have been detected from Sigma Arae.
