Izar (Epsilon Bootis) (Apr 14, 2004)
Type:
Giant star (Class K) /
Main sequence star (Class A)
Brightness:
2.5 mag / 4.9 mag
Visual Distance (Separation):
2.9''
Distance:
210 ly
Colour:
orange / blue-white
Luminosity (Sun = 1):
400 x / 27 x
Mass (Sun = 1):
4 x / 2 x
Temperature:
4,200 degrees / 8,500 degrees approx.
Diameter:
33 x / 2 x
Notes:
Being about 140 AU apart, it takes both Izar components 100 years to orbit around each other.

Celestron Newton 200/1000, Nikon Coolpix 4500

You can take a look at the real relations
between the sizes of selected stars by clicking here.

back