How big is the big dog star?

The "big dog star," commonly known as Sirius, is the brightest star in the night sky and is part of the constellation Canis Major. It has a mass about 2.1 times that of the Sun and a radius approximately 1.7 times larger than the Sun. Sirius is actually a binary star system, consisting of Sirius A, a main-sequence star, and Sirius B, a white dwarf. Its distance from Earth is about 8.6 light-years.