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							Regulus (Alpha Leonis) (Apr 12, 2004) 
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| Type: | 
						 
							Main sequence star (Class B7) 
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| Brightness: | 
						 
							1.35 mag 
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| Distance: | 
						 
							77 ly 
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| Colour: | 
						 
							blue-white 
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| Luminosity (Sun = 1): | 
						 
							140 x 
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| Mass (Sun = 1): | 
						 
							3.5 x 
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| Temperature: | 
						 
							12,000 degrees approx. 
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| Diameter: | 
						 
							7 solar radii 
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| 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
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					between the sizes of selected stars by clicking here.