HR 5412

A faint sixth-magnitude star in the southern parts of Lupus the Wolf, lying about three degrees northwestward from Kakkab, the Alpha star of Lupus. HR 5412 (or HD 126981) is a young blue star, and there are indications that it is binary in nature (if it does possess a companion star, the two are widely separated by a distance of at least 1,500 AU). The spectrum for this star demonstrates that it is rotating unusually rapidly.

HR 5412 is a member of the Scorpius-Centaurus stellar association, a grouping of approximately 1,400 stars spread across the southern sky from Scorpius and Lupus southward through Centaurus and Crux. This is an OB association, a grouping of related young stars gradually drifting apart after their initial formation. The Scorpius-Centaurus group is the nearest such OB association to the Solar System, at a distance of about five hundred light years.