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9 Σεπ 2019 · Learn about Sirius, the brightest star in the night sky and the fifth nearest star system to Earth. Discover its binary nature, its white dwarf companion, its spectral type, its age, and more.
10 Ιουν 2024 · 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 times as luminous as the Sun.
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. The distance between the two varies between 8.2 and 31.5 astronomical units as they orbit every 50 years.
12 Απρ 2015 · 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.
Learn about Sirius, the binary star system that is the brightest star in the night sky, with a magnitude of -1.46. Find out its location, type, luminosity, temperature, and mythology.
Learn about Sirius, the closest and brightest star to Earth, and its binary system of Sirius A and B. Discover its history, composition, orbit, future, and cultural significance.
6 Δεκ 2019 · Sirius A is a binary star, and it is the brightest star in the night sky located in the Canis Majoris constellation. Key Facts & Summary. The name Sirius is derived from the Greek word “Seirios” meaning “glowing” or “scorching.” It has a visual apparent magnitude of -1.46, being twice as bright as Canopus, the second brightest star.
