Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [e] (roughly the distance between the Sun and Uranus) and a period of 50.1 years.

Aug 20, 2025 · Sirius, the Dog Star, is the brightest star in the night sky. Learn how to see it, explore its history, and discover its hidden white dwarf companion.

Nov 21, 2025 · Sirius, brightest star in the night sky, with apparent visual magnitude −1.46. It is a binary star in the constellation Canis Major. The bright component of the binary is a blue-white star 25.4 …

Feb 27, 2025 · Sirius, Alpha Canis Majoris (α CMa), is the luminary of the constellation Canis Major (the Great Dog) and the brightest star in the sky. It is also one of the nearest stars to Earth.

Sirius (The Dog Star) is the brightest star in the night sky, attributed to its luminosity and proximity at a distance of 8.6 light-years.

Sirius, also known as Alpha Canis Majoris, is the brightest star in the constellation of Canis Major, located in the southern sky, and overall the brightest star in the night sky. It has an apparent …

Mar 14, 2025 · Sirius is not just one star but a star system with two stars: Sirius A, the brightest star in our night sky, and Sirius B, a faint white dwarf. They orbit a common center of mass, staying about …

Sirius, a blue-white star 8.16 light distant, is the brightest star in the sky and radiates more than 20 times the energy of our own Sun.

Feb 21, 2025 · Sirius has a small, faint companion star appropriately called Sirius B or the Pup. That name signifies youth, but in fact the companion to Sirius is a white dwarf, a dead star.

Jun 9, 2024 · As most people with an interest in astronomy know, Sirius is the brightest star in the night sky. On the magnitude scale used by astronomers it has a magnitude of -1.46, easily outshining all …