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Sirius, the brightest star in the sky, accompanied by the prominent constellation Orion, the heavenly hunter, is sparkling over a snow-covered winter landscape.
H. Raab herbraab/ Flickr CC

Other Names:

  • Dog Star
  • Canicula
  • Aschere
  • Alpha Canis Majoris
  • HR 2491
  • HD 48915


  • Right Ascension: 06 45 08.9
  • Declination: -16 42 58
  • Apparent Magnitude: -1.46
  • Absolute Magnitude: 0.00
  • Distance: 8.6 LY
  • Spectral Type: A1Vm


Sirius Information:

Sirius, also known as the Dog Star, is the brightest star in the sky. It is also the sixth closest star to Earth. at 8.6 light years. Its name comes from the Greek word for scorching. In 1844, F.W. Bessel used analysis of its motion to determine that it had a companion. This companion was confirmed by observations in 1862 and is now known to be a white dwarf. Sirius B, the companion, has received considerable attention itself, since it is the first white dwarf with a spectrum to show a gravitational red shift as predicted by the general theory of relativity. Sirius is located in the constellation Canis Major.
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