RUSSIAN Total solar eclipse 2008 in Russia
 
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A Detailed Description of the Total Solar Eclipse 2008 August 1st  ECLIPSE Weather-forecast in Siberia on 2008 August 1st  WEATHER Astronomical Telescopes and Equipment for Observation of Total Solar Eclipse  TELESCOPES Siberian Eclipse 2008 Tour Organization  TOUR LINKS  LINKS Map of the site Total Solar Eclipse 2008 in Siberia  MAP


SUN

    The Sun is the star at the center of the Solar System. The Earth and other matter (including other planets, asteroids, meteoroids, comets and dust) orbit the Sun, which by itself accounts for about 99.8% of the solar system's mass. Energy from the Sun—in the form of sunlight—supports almost all life on Earth via photosynthesis, and drives the Earth's climate and weather.

Observation data
Mean distance from Earth 149.6x106 km
(8.31 minutes at the speed of light)
Visual brightness (V) -26.8m
Absolute magnitude 4.8m
Spectral classification G2V
Physical characteristics
Mean diameter 1.392x106 km (109 Earths)
Mass 1.988¤435x1010 kg (332,946 Earths)
Density 1,408 kg/m3
Surface temperature 5785 K
Temperature of corona 5 MK
Core temperature 13.6 MK
Luminosity (Lsol) 3.827x1026 W 3.75x1028 lm ( 98 lm/W efficacy)
Mean Intensity (Lsol) 2.009x107 W m-2 sr-1
Rotation characteristics
Obliquity 7.25° (to the ecliptic)
Rotation period at equator 25.38 days (25 d 9 h 7 min 13 s)
Rotation velocity at equator 7174 km/h
Orbital characteristics Epoch J2000
Aphelion distance : 152,097,701  km (1.016 710 333 5 AU)
Perihelion distance : 147,098,074 km (0.983 289 891 2 AU)
Semi-major axis :

149,597,887.5 km (1.000 000 112 4 AU)

Semi-minor axis : 149,576,999.826 km (0.999 860 486 9 AU)
Eccentricity : 0.016 710 219
Sidereal period : 365.256 366  day (1.000 017 5  yr )
Avg. orbital speed of the Earth: 29.783 km/s (107,218 km/h )
Max. orbital speed : 30.287 km/s (109,033  km/h )
Min. orbital speed : 29.291 km/s (105,448  km/h )
Argument of perihelion : 114.207 83°


Solar eclipse. In Wikipedia, The Free Encyclopedia.
http://en.wikipedia.org/w/index.php?title=Sun&oldid=115906544
     
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Siberian eclipses
   
             
Total Solar Eclipse of 2008 August 1st in Siberia :: Eclipse :: Weather :: Telescopes :: Tour :: Links :: Map