Planet
Earth
- Planet
- 1× Earth gravity
- Orbits the Sun
Earth is a planet with a mean radius of 6,371 km and a surface gravity of 9.82 m/s², which is 1× Earth's, so a 70 kg person would weigh 70 kg there. Escape velocity is 11.19 km/s.
Physical properties
Mass5.9724 × 10²⁴ kg≈measured
Mean radius6,371 km≈
Circumference40,030 km
Surface area510,064,472 km²
Volume1,083.2069 × 10⁹ km³one cubic kilometre is 10⁹ cubic metres
Mean density5,514 kg/m³water is 1,000 kg/m³
Gravity and escape
Surface gravity9.821 m/s²1× Earth's
Escape velocity11.186 km/sthe speed needed to leave without further propulsion
A 70 kg person would weigh70 kg-forcemass is unchanged; only the weight differs
A 1 kg mass would weigh9.821 newtons
Fall in 1 second4.91 mfrom rest, ignoring any atmosphere
Rotation and orbit
Day length (sidereal)23.9345 hours
Orbital period1 Earth years
Orbitsthe Sun
Mean distance from the Sun149.6 million km1 AU
Light travel time from the Sun8.32 minutes
KindPlanet
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