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 …

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.

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, …

Feb 21, 2025 · By early April, Sirius will be moving noticeably toward the sunset glare. See it now. It’s the legendary Dog Star, part of the constellation Canis Major the Greater Dog. From the …

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 …

Sirius, also known as the Dog Star, is the brightest star in the night sky. It is a binary star system consisting of a main sequence star, Sirius A, and a faint white dwarf companion, Sirius B.

Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B.