Omicron Scorpii [SEP] constellation
Omicron Scorpii
Omicron Scorpii (ο Sco, ο Scorpii) is a star in the zodiac constellation of Scorpius. With an apparent visual magnitude of +4.57, it is visible to the naked eye. Parallax measurements indicate a distance of roughly 900 light years. It is located in the proximity of the Rho Ophiuchi dark cloud.
This is a white A-type bright giant with a stellar classification of A4II/III. It is one of the brighter members of this rare class of stars, making it of interest
can belong to only one constellation. Consequently, the redundant second designation in each pair above has dropped out of use.
Bayer assigned two stars duplicate names by mistake: (duplicated as ) and (duplicated as ). He corrected these in a later atlas, and the duplicate names were no longer used.
Other cases of multiple Bayer designations arose when stars named by Bayer in one constellation were transferred by later astronomers to a different constellation. Bayer's Gamma and Omicron Scorpii, for example, were later reassigned from