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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.
9 wrz 2019 · Sirius, Alpha Canis Majoris (α CMa), is the brightest star in the sky. The Sirius star system lies at a distance of 8.6 ly from Earth in the constellation Canis Major. It can be found using the stars of Orion's Belt.
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. It has a radius 1.71 times that of the Sun and a surface temperature of 9,940 kelvins (K), which is more than 4,000 K ...
6 gru 2019 · Sirius A has a diameter of about 1.5 million mi / 2.4 million km, almost 171% of the Sun’s diameter. Sirius B, on the other hand, has a diameter of 7.300 mi / 11.800 km, approximatively 92% of Earth’s diameter.
1 sie 2023 · Sirius A has a diameter of about 1.712 R☉ (1.712 radius of the Sun), with an approximate value of 1,191,038.4 km (740,076.950608 miles). Its vast surface area spans approximately 17,826,307,404,797.13 km² (6,882,775,767,833.3574219 miles²).
Learn about Sirius, the brightest star in the night sky and the nearest star system to Earth. Find out its diameter, mass, temperature, and more.
29 cze 2014 · Learn about Sirius, the brightest star in the night sky, and its binary system of a white main sequence star and a white dwarf. Find out the distance, size, and history of Sirius and its companion stars.
