Sirius

Sirius is the brightest star in the night sky. To the naked eye it appears single like Procyon, but it is actually a binary star system composing of two stars, a yellow dwarf called Sirius A and a white dwarf star known as Sirius B. Sirius, its neighbors Procyon and Betelgeuse make up a triangle of stars called the Winter Triangle.

About
Sirius is a binary star system, composed of two stars called Sirius A and Sirius B. Sirius A is a yellow dwarf star, having nearly the same mass and size as the Sun and Sirius B is a white dwarf. Sirius is situated approximately 8 light-years from the Solar System, which means that light takes more than 8 years to reach us. It is not actually the brightest star in the night sky. It is only bright as it is 8.6 light-years away.

.