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Alphecca / Gemma (Alpha Coronae Borealis) (Apr 12, 2004)
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| Type: |
Main sequence star (Class A0)
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| Brightness: |
2.2 mag
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| Distance: |
75 ly
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| Colour: |
blue-white
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| Luminosity (Sun = 1): |
60 x
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| Mass (Sun = 1): |
3 x
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| Temperature: |
10,000 degrees approx.
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| Diameter: |
5 solar radii
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| Notes: | |
| Alphecca has a cooler companion, a main sequence "dwarf" that consists of about 90% solar mass. | |