It is classified as a long-period pulsating B-type variable star and its brightness varies from magnitude +5.84 to +5.87.

However, this is very unlikely considering that the system includes a B-type star, and stars of this type are young and massive.

At this heat, the star shines with the characteristic blue-white hue of a B-type star.

This is unusual since a B-type star normally does not have any significant X-ray emission.

This high temperature gives this star the blue-white hue that occurs with B-type stars.

T Circini is a B-type star with a period of 3.298 days, ranging in magnitude from 10.6 to 9.3.

Since its formation, it has evolved from a B-type star to a K-type star.

It evolved from a B-type star to a K-type star over the estimated 30-45 million years since its birth.

Eta is a normal white B-type star, about 400 times as luminous as the Sun and 200 light-years away.

The companion is a B-type star, 400 times as luminous as the Sun.