Radius of equator (semi major axis of meridian ellipse) | a=N90° | 6 378 137.0000 m |
Earth flattening | f | 1:298.257 223 563 |
= | 0.003 352 810 664 748 | |
Geocentric gravitational constant (incl. atmosphere) | GM | 3 986 004.418·108 m³/s² |
Angular velocity of Earth´s rotation | ω | 7 292 115.0·10-11 rad/s |
Semi minor axis of meridian ellipse | b | 6 356 752.3142 m |
Radius of meridian curvature at the equator | M0° | 6 335 439.327 m |
Radius of polar curvature | c=M90° | 6 399 593.6258 m |
Radius of Gaussian mean curvature at the Equator | Ro | 6 356 752.314 m |
Mean radius of semi-axes | R1 | 6 371 008.7714 m |
Radius of sphere of equal area | R2 | 6 371 007.1809 m |
Radius of sphere of equal volume | R3 | 6 371 000.7900 m |
Meridian quadrant | mP | 10 001 965.7293 m |
Second flattening | f´ | 0.003 364 089 820 976 |
Third flattening | n | 0.001 679 220 386 384 |
First eccentricity | e² | 6.694 379 990 14·10-3 |
Second eccentricity | e´² | 6.739 496 742 28·10-3 |
Linear eccentricity | E | 521 854.008 423 39 m |
Gravity potential at the geoid | Uo | 62 636 851.7146 m²/s² |
Second degree zonal harmonic | C20 | -0.484166774985·10-3 |
Dynamic form factor -C20·√5= | J2 | 1.08263·10-3 |
Normal gravity at the equator on the level ellipsoid | γe | 9.780 325 3359 m/s² |
Normal gravity at the poles on the level ellipsoid | γp | 9.832 184 9378 m/s² |
Mean value of normal gravity | γ | 9.797 643 222 2 m/s² |
Normal vertical gravity gradient | ∂γ/∂h | -3.09·10-6 s-2 |
Hydrostatic flattening | fh | 1:299.7 = 0.003337 |
Newtonian constant of gravitation | G | (6.67428±0.00067)·10-11 m³/kg/s² |
Geocentric gravitational constant (incl. atmosphere) | GM | (3 986 004 418±8)·105 m³/s² |
Radius of equator (semi major axis of meridian ellipse) | a | (6 378 136.6±0.1) m |
Inverse flattening (flattening factor) | 1/f | 298.25642±0.00001 |
Dynamical form factor | J2 | (10 826 359±1)·10-10 |
Angular velocity of Earth rotation | ω | 7 292 115·10-11 rad/s |
Gravity potential at the geoid | Wo | (62 636 856.0±0.5) m²/s² |
Mean air pressure at sea level | 1013.25 mbar | |
Mean vertical air pressure gradient at sea level at 15°C | 0.12 mbar/m | |
Mean refractive index of air close to the Earth surface | 1.000293 | |
Mean coefficient of refractivity | 0.13 | |
Velocity of light in a vacuum | 299 792 458 m/s | |
Orbital velocity at Earth surface | 7.91 km/s | |
Escape velocity | 11.2 km/s | |
Minimum orbital period of an Earth satellite (theoretical) | 1 h 24 min 18 s | |
Mean sidereal day | 23 h 56 min 4.091 s | |
Gravitative time dilation | -1.09 · 10-16 |
Grad | ρgon = 200 gon/π | 63.66198 gon |
Degree | ρ° = 180°/π | 57.29578° |
Arcminute | ρ` = 10800`/π | 3437.747` |
Arcsecond | ρ`` = 648000``/π | 206264.8`` |