Earth: Difference between revisions
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| atmosphere_composition = | | atmosphere_composition = | ||
{{unbulleted list |class=nowrap | {{unbulleted list |class=nowrap | ||
| 78.08% {{wp|nitrogen|nitrogen}} (N< | | 78.08% {{wp|nitrogen|nitrogen}} (N<sub>2</sub>; dry air) | ||
| 20.95% {{wp|oxygen|oxygen}} (O< | | 20.95% {{wp|oxygen|oxygen}} (O<sub>2</sub>) | ||
| ~ 1% {{wp|watr vapor|water vapor}} <small>({{wp|climate|climate}} variable)</small> | | ~ 1% {{wp|watr vapor|water vapor}} <small>({{wp|climate|climate}} variable)</small> | ||
| 0.9340% {{wp|argon|argon}} | | 0.9340% {{wp|argon|argon}} | ||
Latest revision as of 10:10, 23 May 2022
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.jpg) A photograph taken by the crew of Ursa 3 in 2027. | |||||||||||||
| Designations | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gaia, Terra, Tellus, the world, the globe | |||||||||||||
| Adjectives | Earthly, terrestrial, terran, tellurian | ||||||||||||
| Orbital characteristics | |||||||||||||
| Epoch J2000 | |||||||||||||
| Aphelion | 152100000 km (94500000 mi) | ||||||||||||
| Perihelion | 147095000 km (91401000 mi) | ||||||||||||
| Periastron | 2022-Jan-04 | ||||||||||||
| 149598023 km (92955902 mi)> | |||||||||||||
| Eccentricity | 0.0167086 | ||||||||||||
| 365.256363004 d (1.00001742096 aj) | |||||||||||||
Average orbital speed | 29.78 km/s (107200 km/h; 66600 mph) | ||||||||||||
| 358.617° | |||||||||||||
| Inclination |
| ||||||||||||
| −11.26064° to J2000 ecliptic | |||||||||||||
| 114.20783° | |||||||||||||
| Known satellites |
| ||||||||||||
| Physical characteristics | |||||||||||||
Mean radius | 6371.0 km (3958.8 mi) | ||||||||||||
Equatorial radius | 6378.137 km (3963.191 mi) | ||||||||||||
Polar radius | 6356.752 km (3949.903 mi) | ||||||||||||
| Flattening | 1/298.257222101 | ||||||||||||
| Circumference |
| ||||||||||||
| |||||||||||||
| Volume | 1.08321×1012 km3 (2.59876×1011 cu mi) | ||||||||||||
| Mass | 5.97237×1024 kg (1.31668×1025 lb) (3.0×10−6 M☉) | ||||||||||||
Mean density | 5.514 g/cm3 (0.1992 lb/cu in) | ||||||||||||
Equatorial surface gravity | 9.80665 m/s2 (1 g; 32.1740 ft/s2) | ||||||||||||
| 0.3307 | |||||||||||||
Equatorial escape velocity | 11.186 km/s (40270 km/h; 25020 mph) | ||||||||||||
1.0 d (24h 00m 00s) | |||||||||||||
Sidereal rotation period | 0.99726968 d (23h 56m 4.100s) | ||||||||||||
Equatorial rotation velocity | 0.4651 km/s (1674.4 km/h; 1040.4 mph) | ||||||||||||
| 23.4392811° | |||||||||||||
| |||||||||||||
| Atmosphere | |||||||||||||
Surface pressure | 101.325 kPa (at MSL) | ||||||||||||
| Composition by volume | |||||||||||||
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