EARTH Coordinates from center of universe: S-01 34,5P 345/12S 034/IT,345V-NO 345-3,45,5FR-RTE -175,5POm,345.655SS === Epoch J2000.0 Aphelion 152098232 km Perihelion 147098290 km Semi-major axis 149598261 km Eccentricity 0.01671123 === Orbital period 365.256363004 days Average orbital speed 107200 km/h Mean anomaly 357.51716° Inclination 7.155° to Sun's equator Inclination 1.57869° to invariable plane Longitude of ascending node 348.73936° Argument of perihelion 114.20783° === 1 natural satellite (the Moon) 1070 operational artificial satellites 21000 pieces of debris greater than 10 cm Mean radius 6371.0 km Equatorial radius 6378.1 km Polar radius 6356.8 km === Circumference 40075.017 km Surface area 510072000 km² Land area 148940000 km² (29.2%) Water area 361132000 km² (70.8 %) === Volume 1.08321×1012 km³ Mass 5.97219×1024 kg 3.0×10−6 Suns Mean density 5.515 g/cm³ Equatorial surface gravity 9.780327 m/s² === Escape velocity 11.186 km/s Sidereal rotation period 0.99726968 d 23h 56m 4.100s Equatorial rotation velocity 1674.4 km/h Axial tilt 23°26′21.4119″ Albedo 0.367 Surface temp. −89.2...+56.7 °C === Surface pressure 101.325 kPa Composition: 78.08% nitrogen 20.95% oxygen 0.93% argon 0.039% carbon dioxide About 1% water vapor === MOON Satellite of Earth Perigee 363295 km Apogee 405503 km Semi-major axis 384399 km Eccentricity 0.0549 Orbital period 27.321582 days Synodic period 29.530589 days === Average orbital speed 1.022 km/s Inclination 5.145° to the ecliptic Longitude of ascending node: regressing by one revolution in 18.6 years Argument of perigee: progressing by one revolution in 8.85 years === Mean radius 1737.10 km Equatorial radius 1738.14 km Polar radius 1735.97 km Flattening 0.00125 Circumference 10921 km === Surface area 3.793×107 km² Volume 2.1958×1010 km³ Mass 7.3477×1022 kg Mean density 3.3464 g/cm³ === Equatorial surface gravity 1.622 m/s² Escape velocity 2.38 km/s Sidereal rotation period 27.321582 days Equatorial rotation velocity 4.627 m/s Axial tilt: 1.5424° to ecliptic, 6.687° to orbit plane Albedo 0.136 === Surface temp. -203...117 °С Apparent magnitude −12.74 Angular diameter 29.3 to 34.1 arcminutes Surface pressure: 10−7 Pa (day), 10−10 Pa (night) Composition: Ar, He, Na, K, H, Rn