Regulus (Alpha Leonis) (Apr 12, 2004)
Type:
Main sequence star (Class B7)
Brightness:
1.35 mag
Distance:
77 ly
Colour:
blue-white
Luminosity (Sun = 1):
140 x
Mass (Sun = 1):
3.5 x
Temperature:
12,000 degrees approx.
Diameter:
7 solar radii
Notes:
Regulus has a fainter companion which is a double star itself. It is a hundred times as far away from Regulus as Pluto is from the Sun. Regulus and the double partner orbit each other within at least 130,000 years.

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.

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