How Big is the Earth

  • Earth’s mass (1024 kg) – 5.9722
  • With 1 satellite – Moon
  • Its volume (1010 km3) – 108.321  
  • With equatorial radius – 6378.137 Km    
  • With polar radius – 6356.752 Km       
  • The radius of its Core – 3485 Km
  • Its mean density – 5513 kg/m3    
  • Means surface gravity (mean) of – 9.820 m/s2
  • And surface acceleration (eq) of – 9.780 m/s2     
  • And surface acceleration (pole) – 9.832 m/s2         
  • Escape velocity – 11.186 km/s
  • Solar irradiance – 1361.0 W/m2   
  • Moment of inertia – 0.3308 I/MR2
  • Sidereal orbit period – 365.256 days
  • Tropical orbit period – 365.242 days     
  • Length of day – 24 hours   

·         Perihelion (106 km) – 147.095        ·         Aphelion (106 km) – 152.100·         Mean orbital velocity – 29.78 km/s        ·         Max. orbital velocity – 30.29 km/s·         Min. orbital velocity – 29.29 km/s·         Total mass of atmosphere – 5.1 x 1018 kg·         Total mass of hydrosphere – 1.4 x 1021 kg·         Average temperature – 288 K (15 C)(NASA figures)

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