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Adhara

A double star system with a blue star and a smaller main sequence star.
If we could see ultraviolet light, Adhara would be the brightest star in the sky (except the Sun).

Constellation: Canis Major
Distance: 431 light-years
Radial velocity: 27.3 km/sec
Space between Adhara A and B: 990 AU

Adhara A

Spectral class: B2
Visual magnitude: 1.51
Luminosity: 15 000 * Sun
Mass: 12 * Sun
Diameter: 13 * Sun
  

Adhara B


Visual magnitude: 7.4
Luminosity: 17 * Sun

Back: List of big and giant stars 		    Adhara
Canis Major.
Adhara (in the image at the bottom) is the second brightest star, the brightest is Sirius.
Photo: Nasa
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