Stellar Type: Main sequence dwarf
Spectral Class: G2V
Mean Distance: 1.9448 ×10^11 m (from SaganIV)
Visual Brightness: ?
Absolute Magnitude: ?
Age: 4,625,000,000 years (at Sagan project week 25)
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.