Astronomy |
Planets -
Earth |
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Bulk Parameters | Orbital Parameters
Mean Orbital Elements (J2000) | Magnetospheric Parameters
Atmospheric Parameters | Satellites |
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| Bulk Parameters |
Black-Body Temperature |
254.3 K |
Bond Albedo |
0.306 |
Core Radius |
3485 km |
Ellipticity |
0.00335 |
Equatorial Radius |
6378.1 km |
Escape Velocity |
11.186 km s−1 |
GM |
0.3986 × 106 km3 s−2 |
J2 |
1082.63 × 10−6 |
Mass |
5.9736 × 1024 kg |
Mean Density |
5515 kg m−3 |
Moment of Inertia |
0.3308 I MR−2 |
Polar Radius |
6356.8 km |
Solar Irradiance |
1367.6 W m−2 |
Surface Gravity |
9.78 m s−2 |
Topographic Range |
20 km |
Visual Geometric Albedo |
0.367 |
Visual Magnitude (V(1,0)) |
−3.86 |
Volume |
108.321 × 1010 km3 |
Volumetric Mean Radius |
6371.0 km |
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| Orbital Parameters |
Aphelion |
152.10 × 106 km |
Length of Day |
24.0000 hours |
Maximum Orbital Velocity |
30.29 km s−1 |
Mean Orbital Velocity |
29.78 km s−1 |
Minimum Orbital Velocity |
29.29 km s−1 |
Obliquity to Orbit |
23.45 |
Orbital Eccentricity |
0.0167 |
Orbital Inclination |
0.000° |
Perihelion |
147.09 × 106 km |
Semimajor Axis |
149.60 × 106 km |
Sidereal Orbit Period |
365.256 days |
Sidereal Rotation Period |
23.9345 hours |
Tropical Orbit Period |
365.242 days |
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| Mean Orbital Elements (J2000) |
Longitude of Ascending Node |
−11.26064° |
Longitude of Perihelion |
102.94719° |
Mean Longitude |
100.46435° |
Orbital Eccentricity |
0.01671022 |
Orbital Inclination |
0.00005° |
Semimajor Axis |
1.00000011 AU |
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| Magnetospheric Parameters |
Dipole Field Strength |
0.3076 gauss-R e 3 [*] |
Dipole Offset (planet centre to dipole centre) distance |
0.0725 R e [*] |
Latitude of Dipole North |
78.6° N |
Latitude of Offset Vector |
18.3° N |
Longitude of Dipole North |
70.1° W |
Longitude of Offset Vector |
147.8° E |
| [*] R e = Earth Radii (6378.1 km) |
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| Atmospheric Parameters |
Average Temperature |
288 K |
Diurnal Temperature Range |
283 K to 293 K |
Mean Molecular Weight |
28.97 g mol−1 |
Scale Height |
8.5 km |
Surface Density |
1.217 kg m−3 |
Surface Pressure |
1014 mbar |
Surface Wind Speed |
0 to 100 m s−1 |
| Nitrogen N2 |
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78.084% |
| Oxygen O2 |
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20.946% |
| Water H2O |
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1% |
| Argon Ar |
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0.934% |
Carbon
Dioxide CO2 |
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0.035% |
| Neon Ne |
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18.18 ppm |
| Helium He |
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5.24 ppm |
| CH4 |
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1.7 ppm |
| Krypton Kr |
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1.14 ppm |
| Hydrogen H2 |
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0.55 ppm |
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