Sun Statistics 
 Mass (kg) 1.989e+30 
 Mass (Earth = 1) 332,830 
 Equatorial radius (km) 695,000 
 Equatorial radius (Earth = 1) 108.97 
 Mean density (gm/cm^3) 1.410 
 Rotational period (days) 25-36* 
 Escape velocity (km/sec) 618.02 
 Luminosity (ergs/sec) 3.827e33 
 Magnitude (Vo) -26.8 
 Mean surface temperature 6,000°C 
 Age (billion years) 4.5 
 Principal chemistry  
Hydrogen
Helium
Oxygen 
Carbon
Nitrogen
Neon
Iron
Silicon
Magnesium
Sulfur
All others 
 92.1%  
7.8%  
0.061%  
0.030%  
0.0084%  
0.0076%  
0.0037%  
0.0031%  
0.0024%  
0.0015%  
0.0015% 
* The Sun's period of rotation at the surface varies from approximately 25 days at the equator to 36 days at the poles. Deep down, below the convective zone, everything appears to rotate with a period of 27 days.

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