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aac_dhule03 · Amateur Astronomy Club - Dhule
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Reply | Forward Message #112 of 120 |

Sirius

Other Names:

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

Data:

  • 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

Constellation: Canis Major

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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Sirius Other Names: Dog Star Canicula Aschere Alpha Canis Majoris HR 2491 HD 48915 Data: Right Ascension: 06 45 08.9 Declination: -16 42 58 Apparent Magnitude:... 		chetan thakare
thakare_chetan
Offline Send Email 		Oct 13, 2007
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