Parameters of the GRS80 ellipsoid.
|Equatorial radius||a 6 378 137 m|
|Geocentric gravitational constant||GM 3 986 005 × 108 m3 s−2|
|Dynamical form factor||J 2 108263 × 10−8|
|Angular velocity of the Earth||ω 7 292 115 × 10−11 rad s−1|
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