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Astronomy
Planets - Earth
Bulk Parameters | Orbital Parameters
Mean Orbital Parameters (J2000) | Magnetospheric Parameters
Atmospheric Parameters | Satellites
| Bulk Parameters |
| Mass |
5.9736 × 1024 kg |
| Volume |
108.321 × 1010 km3 |
| Equatorial Radius |
6378.1 km |
| Polar Radius |
6356.8 km |
| Volumetric Mean Radius |
6371.0 km |
| Core Radius |
3485 km |
| Ellipticity |
0.00335 |
| Mean Density |
5515 kg m-3 |
| Surface Gravity |
9.78 m s-2 |
| Escape Velocity |
11.186 km s-1 |
| GM |
0.3986 × 106 km3 s-2 |
| Bond Albedo |
0.306 |
| Visual Geometric Albedo |
0.367 |
| Visual Magnitude (V(1,0)) |
-3.86 |
| Solar Irradiance |
1367.6 W m-2 |
| Black-Body Temperature |
254.3 K |
| Moment of Inertia |
0.3308 I MR-2 |
| J2 |
1082.63 × 10-6 |
| Topographic Range |
20 km |
|
|
| Orbital Parameters |
| Semimajor Axis |
149.60 × 106 km |
| Sidereal Orbit Period |
365.256 days |
| Tropical Orbit Period |
365.242 days |
| Perihelion |
147.09 × 106 km |
| Aphelion |
152.10 × 106 km |
| Mean Orbital Velocity |
29.78 km s-1 |
| Maximum Orbital Velocity |
30.29 km s-1 |
| Minimum Orbital Velocity |
29.29 km s-1 |
| Orbital Inclination |
0.000 ° |
| Orbital Eccentricity |
0.0167 |
| Sidereal Rotation Period |
23.9345 hours |
| Length of Day |
24.0000 hours |
| Obliquity to Orbit |
23.45 |
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| Mean Orbital Elements (J2000) |
| Semimajor Axis |
1.00000011 AU |
| Orbital Eccentricity |
0.01671022 |
| Orbital Inclination |
0.00005° |
| Longitude of Ascending Node |
-11.26064° |
| Longitude of Perihelion |
102.94719° |
| Mean Longitude |
100.46435° |
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|
| Magnetospheric Parameters |
| Dipole Field Strength |
0.3076 gauss-Re3 [*] |
| Latitude of Dipole North |
78.6° N |
| Longitude of Dipole North |
70.1° W |
| Dipole Offset (planet centre to dipole centre) distance |
0.0725 Re [*] |
| Latitude of Offset Vector |
18.3° N |
| Longitude of Offset Vector |
147.8° E |
| [*] Re = Earth Radii (6378.1 km) |
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|
| Atmospheric Parameters |
| Surface Pressure |
1014 mbar |
| Surface Density |
1.217 kg m-3 |
| Scale Height |
8.5 km |
| Average Temperature |
288 K |
| Diurnal Temperature Range |
283 K to 293 K |
| Surface Wind Speeds |
0 to 100 m s-1 |
| Mean Molecular Weight |
28.97 g mol-1 |
| Nitrogen N2 |
 |
78.084% |
| Oxygen O2 |
|
20.946% |
| Water H2O |
|
1% |
| Argon Ar |
|
0.934% |
Carbon
Dioxide CO2 |
|
0.035% |
| Neon Ne |
|
18.18 ppm |
| Helium He |
|
5.24 ppm |
| CH4 |
|
1.7 ppm |
| Krypton Kr |
|
1.14 ppm |
| Hydrogen H2 |
|
0.55 ppm |
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