V528 Carinae

V528 Carinae is a variable star in the constellation Carina.
V528 Carinae has an apparent visual magnitude that varies between about 6.3 and 6.8. When it is near its maximum brightness, it is very faintly visible to the naked eye under ideal observing conditions. 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 implies a distance of around . Assuming membership of the Carina OB2 membership would give a distance of about.
V528 Carinae is a red supergiant of spectral type M2 Ib with an effective temperature of. 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 was found to be a variable star when the Hipparcos data was analyzed, and for that reason it was given its variable star designation in 1999. It is classified as a slow irregular variable whose prototype is TZ Cassiopeiae.