EARHT
 
 
 
The blue marble photograph of Earth, taken during the Apollo 17 lunar mission in 1972
Orbital characteristics
Epoch J2000[n 1]
Aphelion 152100000 km[n 2]
(94500000 mi; 1.017 AU)
Perihelion 147095000 km[n 2]
(91401000 mi; 0.98327 AU)
149598023 km[1]
(92955902 mi; 1.00000102 AU)
Eccentricity 0.0167086[1]
365.256363004 d[2]
(1.00001742096 yr)
Average orbital speed
 29.78 km/s[3]
(107200 km/h; 66600 mph)
358.617°
Inclination
−11.26064°[3] to J2000 ecliptic
114.20783°[3]
Satellites
Physical characteristics
Mean radius
 6371.0 km (3958.8 mi)[6]
Equatorial radius
 6378.1 km (3963.2 mi)[7][8]
Polar radius
 6356.8 km (3949.9 mi)[9]
Flattening 0.0033528[10]
1/298.257222101 (ETRS89)
Circumference
  • 510072000 km2 (196940000 sq mi)[13][14][n 4]
  • 148940000 km2 land (57510000 sq mi; 29.2%)
  • 361132000 km2 water (139434000 sq mi; 70.8%)
Volume 1.08321×1012 km3 (2.59876×1011 cu mi)[3]
Mass 5.97237×1024 kg (1.31668×1025 lb)[15]
(3.0×10−6 M☉)
Mean density
 5.514 g/cm3 (0.1992 lb/cu in)[3]
9.807 m/s2 (1 g; 32.18 ft/s2)[16]
0.3307[17]
11.186 km/s[3]
(40270 km/h; 25020 mph)
Sidereal rotation period
0.99726968 d[18]
(23h 56m 4.100s)
Equatorial rotation velocity
 0.4651 km/s[19]
(1674.4 km/h; 1040.4 mph)
23.4392811°[2]
Albedo
Surface temp. min mean max
Kelvin 184 K[20] 288 K[21] 330 K[22]
Celsius −89.2 °C 15 °C 56.7 °C
Fahrenheit −128.5 °F 59 °F 134 °F
Atmosphere
Surface pressure
 101.325 kPa (at MSL)
Composition by volume
at

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