V528 Carinae

V528 Carinae (V528 Car, HD 95950, HIP 54021) is a variable star in the constellation Carina.

V528 Carinae has an apparent visual magnitude that varies between about 6.3 and 6.8. It is a distant star but the exact distance is uncertain. The Hipparcos satellite gives a negative annual parallax and is not helpful, while the Gaia Data Release 3 parallax of $0.45 mas$ implies a distance of around $7,200 light years$ (2,200 parsecs). Assuming membership of the Carina OB2 membership would give a distance of about $1,830 parsecs$.

V528 Carinae is a red supergiant of spectral type M2 Ib with an effective temperature of $3,700 K$. It has a radius of 700 solar radii. In the visible spectrum, its luminosity is 11,900 times higher than the Sun, but the bolometric luminosity considering all wavelengths reaches around. It loses mass at per year.

It is classified as a slow irregular variable whose prototype is TZ Cassiopeiae.