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Rasalhague (Alpha Ophiuchi) (Apr 17, 2004)
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| Type: |
Giant star (Class A5)
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| Brightness: |
2.13 mag
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| Distance: |
47 ly
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| Colour: |
white
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| Luminosity (Sun = 1): |
25 x
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| Mass (Sun = 1): |
2-4 x
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| Temperature: |
8,300 degrees approx.
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| Diameter: |
-
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| Notes: | |
| Rasalhague has a faint companion, which is only 0.5 arc seconds away from the main star. Both stars orbit around their center of gravity within 8.7 days. | |