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 …
Sirius B: Now is the best time to see Sirius’ companion - EarthSky
2023年12月22日 · But did you know that Sirius is also a double star? The companion, Sirius B, also known as the Pup, is a very small star orbiting the primary. You can see it using even …
The life and times of Sirius B | Astronomy.com
2005年7月27日 · At a distance of 8.6 light-years, Sirius A and B compose the fifth-nearest star system. (The dim spikes of light seen in the image are artifacts of the telescope’s optics.) Just …
Sirius (α CMa): Star System, Facts, Location, Constellation - Star …
2019年9月9日 · Sirius is a binary star system composed of Sirius A, a white main-sequence star of spectral type A0mA1 Va, and Sirius B, a white dwarf with the stellar classification DA2. …
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 …
The Dog Star, Sirius, and its Tiny Companion | HubbleSite
2005年12月13日 · This Hubble Space Telescope image shows Sirius A, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed …
See Sirius, the brightest star in the night sky - EarthSky
2024年2月2日 · Sirius is the sky’s brightest star. You’ll always know it’s Sirius because Orion’s Belt – 3 stars in a short, straight row – points to it.
Sirius (α Canis Majoris) | Facts, Information, History & Definition
2019年12月6日 · Sirius B is the first white dwarf to be discovered, a type of star first understood by Subrahmanyan Chandrasekhar in 1930. Sirius B is also the closest white dwarf star to …
Sirius is the Brightest Star in the Sky - AstroBackyard
Sirius (or Sirius A) is a main-sequence star of spectral type early A. Sirius B is one of the largest known white dwarf stars and is 10,000 times dimmer than Sirius. It’s so dim that astronomers …
Sirius Star – Facts About The Brightest Star From Earth
Sirius is a binary star system. The primary star is Sirius A, a main-sequence star of spectral type A0 or A1, and the companion star is a faint white dwarf star, designated Sirius B. It is of the …
Sirius: The Dog Star (Alpha Canis Majoris) - Constellation Guide
2014年6月29日 · Sirius, also known as the Dog Star, α Canis Majoris (Alpha Canis Majoris), or Canicula, is the brightest star in the night sky. It lies at a distance of 8.60 light years (2.64 …
Can the Sirius Star System Support Life? - Owlcation
Sirius is a known binary star system. This means that there are two stars in this system. The main star is a Class A (White) star called 'Sirius A', there is a companion star—'Sirius B'—which is a …
The Dog Star, Sirius A, and its tiny companion | ESA/Hubble
Sirius A, only 8.6 light-years from Earth, is the fifth closest star system known. Sirius B, a white dwarf, is very faint because of its tiny size, only 12,000 kilometres in diameter. White dwarfs …
Sirius: The brightest star in Earth's night sky | Space
2023年10月24日 · However the discovery of a companion star, Sirius B, in 1862 surprised astronomers. The star that you can see with the naked eye is called Sirius A, or sometimes …
Sirius B — A New Pup in My Life - Sky & Telescope
2017年3月29日 · To see the pair is to sense something of the scale or our Solar System as seen from Sirius, 8.6 light years away. If you've never tried to see Sirius B, there's no better time …
Meet Sirius, the Brightest Star - Sky & Telescope
2018年3月27日 · It’s a member of a binary system, and its companion is a tiny (smaller than Earth!) white dwarf star named Sirius B, or more playfully, “The Pup.” Though it has about the …
Sirius B - Universe Today
2009年11月15日 · Sirius B is the name of the fainter, smaller, less massive star in the Sirius binary system (the brighter, larger, more massive one is Sirius A, or just Sirius). It was …
Sirius Star Facts - Solarsystemquick.com
Sirius is a two star system 8.6 light years from Earth. It consists of the main sequence star Sirius A and its small white dwarf companion Sirius B. White dwarfs are the core remains of stars …
APOD: 2000 June 11 - Sirius: The Brightest Star in the Night
In 1862, Sirius was discovered to be a binary star system with a companion star, Sirius B, 10,000 times dimmer than the bright primary, Sirius A. Sirius B was the first white dwarf star …
Zooming on Sirius B - ESA/Hubble
2005年12月13日 · This sequence zooms on three ground-based images of Sirius and end up with the Hubble image showing both Sirius and Sirius B. The first ground-based image was taken …