Some Earth Facts...

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Some Earth Facts...
« on: February 11, 2007, 07:22:42 PM »
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)
91,402,725 miles
Semi-major axis:    149,597,887.5 km
(1.000 000 112 4 AU)
92,956,041 miles
Semi-minor axis:    149,576,999.826 km
(0.999 860 486 9 AU)
92,943,062 miles
Orbital circumference:    924,375,700 km
( 6.179 069 900 7 AU)
Eccentricity:    0.016 710 219
Avg. orbital speed:    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)
Inclination:    0
(7.25° to Sun's equator)
Longitude of ascending node:    348.739 36°
Argument of perihelion:    114.207 83°
Satellites:    1 (the Moon)
Physical characteristics
Ellipticity:    0.003 352 9
Mean radius:    6,372.797 km
Equatorial radius:    6,378.137 km
Polar radius:    6,356.752 km
Aspect Ratio:    0.996 647 1
Equatorial circumference:    40,075.02 km
Meridional circumference:    40,007.86 km
Mean circumference:    40,041.47 km
Surface area:    510,065,600 km²
Land area:    148,939,100 km² (29.2 %)
Water area:    361,126,400 km² (70.8 %)
Volume:    1.083 207 3×1012 km³
Mass:    5.9742×1024 kg
Mean density:    5,515.3 kg/m³
Equatorial surface gravity:    9.780 1 m/s²
(0.997 32 g)
Escape velocity:    11.186 km/s (≅39,600 km/h)
Sidereal rotation period:    0.997 258 d (23.934 h)
Rotation velocity at equator:    465.11 m/s
Axial tilt:    23.439 281°
Right ascension of North pole:    undefined°
Declination:    +90°
Albedo:    0.367
Surface temp.:
   Kelvin
   Celsius    
min    mean    max
185 K    287 K    331 K
-88.3 °C    14 °C    57.7 °C
Adjectives:    Terrestrial, Terran, Telluric, Tellurian, Earthly
Atmosphere
Surface pressure:    101.3 kPa (MSL)
Composition:    78.08% Nitrogen
20.94% Oxygen
0.93% Argon
0.038% Carbon dioxide
Trace water vapor (varies with climate)







also..heres some more pics






also dont you think the guy who free falled from space would have said anything like "oh and the earth isnt a sphere"