Sirius - Wikipedia
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.
Sirius | Facts & Location | Britannica
2024年11月23日 · 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.
See Sirius, the brightest star in the night sky - EarthSky
2024年2月2日 · February is perfect for both Northern Hemisphere and Southern Hemisphere observers to view the brightest star in the sky: Sirius. As part of the constellation Canis Major the Greater Dog,...
Sirius: The brightest star in Earth's night sky | Space
2023年10月24日 · Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth's night sky. The name means "glowing" in Greek — a fitting description, as only a few planets, the full moon...
Sirius (α CMa): Star System, Facts, Location, Constellation - Star …
2019年9月9日 · Sirius, Alpha Canis Majoris (α CMa), is the brightest star in the night sky and one of the nearest star systems to Earth. It has an apparent magnitude of -1.46 and lies at a distance of only 8.6 light years from the Sun. It is also known as the Dog Star, in reference to its position as the luminary of the constellation Canis Major, the Greater Dog.
Sirius is the Brightest Star in the Sky - AstroBackyard
Sirius is known for being the brightest star in the night sky and is nearly twice as bright as the next brightest star, Canopus with a magnitude of -1.46. Sirius is also known as the ‘Dog star’ because it is part of the constellation Canis Major, which is Latin for “the greater dog.”
Sirius - Explaining Science
2024年6月9日 · Sirius is a bright star, 25.5 times more luminous than the Sun, and in astronomical terms it is close. It lies at a distance of 8.6 light years, in celestial terms this is our back yard, making it the seventh nearest star to the Sun.
Sirius Star Facts - Type, Color, Myths, & Location - Astronomy Trek
2015年4月12日 · 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.
Sirius Star – Facts About The Brightest Star From Earth
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 magnitude of 1.46, making it twice as bright as Canopus, the second brightest star in Canis Major.
Sirius (α Canis Majoris) | Facts, Information, History & Definition
2019年12月6日 · 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 named Sirius B, which is a spectral type DA2 star.
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