Sagan: Difference between revisions
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'''SAGAN STAR''' |
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Homestar: Sagan |
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'''Stellar Type''': Main sequence dwarf |
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Homestar Type: G2 |
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'''Spectral Class''': G2V |
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'''Metallicity''': 0.0299 |
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Sagan is a G2-class star, which means that Sagan is a yellow subgiant. Its mass is around the same as Sol, with an error scale of 0.5. |
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'''Mean Distance''': 1.9448 ×10^11 m (from SaganIV) |
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'''Visual Brightness''': ? |
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'''Absolute Magnitude''': ? |
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'''Age''': 4,525,000,000 years (at Sagan project week 17) |
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'''Lifespan''': 6,078,300,000 years (5,238,400,000 as main sequence) |
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'''Mean Diameter''': 1.7818 x10^9 m |
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'''Mean Radius''': 1.28 solar radii (8.9088 x10^8 m) |
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'''Mean Circumference''': 5.5976 x 10^9 m |
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'''Surface Area''': 9.9735 x 10^18 m^2 |
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'''Volume''': 2.9617 x 10^27 m^3 |
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'''Mass''': 1.2592 solar masses (2.5080 x10^30 kg) |
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'''Average Density''': 0.8468 x 10^3 kg/m^3 |
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'''Surface Escape Velocity''': 612.936 Km/s |
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'''Surface Temp''': 5823 K (effective temp) |
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'''Luminosity''': 1.69 solar luminosity (6.5022 x 10^26) |
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'''Habitable Zone''': 0.75 to 1.6 Au (midpoint 1.3) |
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Sagan is a G2V spectral class star like our sun. It is a main sequence dwarf star (gets it's energy from nuclear fusion by fusing hydrogen to form helium). It's color is actually an off-white but appears yellow because of atmospheric scattering on Sagan IV. It is 69% more luminous and 29% more massive then our sun albeit only 60% the density of our sun. Sagan's habitable zone lies between 0.75 to 1.6 au. |
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Revision as of 19:38, 5 May 2008
SAGAN STAR
Stellar Type: Main sequence dwarf
Spectral Class: G2V
Metallicity: 0.0299
Mean Distance: 1.9448 ×10^11 m (from SaganIV)
Visual Brightness: ?
Absolute Magnitude: ?
Age: 4,525,000,000 years (at Sagan project week 17)
Lifespan: 6,078,300,000 years (5,238,400,000 as main sequence)
Mean Diameter: 1.7818 x10^9 m
Mean Radius: 1.28 solar radii (8.9088 x10^8 m)
Mean Circumference: 5.5976 x 10^9 m
Surface Area: 9.9735 x 10^18 m^2
Volume: 2.9617 x 10^27 m^3
Mass: 1.2592 solar masses (2.5080 x10^30 kg)
Average Density: 0.8468 x 10^3 kg/m^3
Surface Escape Velocity: 612.936 Km/s
Surface Temp: 5823 K (effective temp)
Luminosity: 1.69 solar luminosity (6.5022 x 10^26)
Habitable Zone: 0.75 to 1.6 Au (midpoint 1.3)
Sagan is a G2V spectral class star like our sun. It is a main sequence dwarf star (gets it's energy from nuclear fusion by fusing hydrogen to form helium). It's color is actually an off-white but appears yellow because of atmospheric scattering on Sagan IV. It is 69% more luminous and 29% more massive then our sun albeit only 60% the density of our sun. Sagan's habitable zone lies between 0.75 to 1.6 au.