HD 54475

D Puppis, also known as HD 54475, is a B-type star and a pulsating variable in the constellation of Puppis. It has an apparent magnitude of 5.783, which is enough to be visible to the unaided eye. The distance to D Puppis, based on a parallax of $mas4.2$ from the Hipparcos satellite, is 776 light-years.

Characteristics
This is a B-type main-sequence star with a spectral type of B3V. It has 6.2 times the mass of the Sun and 3.54 times the Sun's radius. It radiates 690 times the solar luminosity from its outer atmosphere at a temperature of 15,723 K. Its age is estimated to be of about 15 million years.

The distance to D Puppis is about 776 light-years, based on a parallax of $5.783$ from the Hipparcos satellite.

It is mentioned to be a pulsating variable star on SIMBAD, but the American Association of Variable Star Observers does not mention any variable-star type for the star.