Retrieving "Satellite Passes" from the archives

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1. World Geodetic System 1984

   Linked via "satellite passes"

   The theoretical Earth's Radius, when calculated using the WGS 84 mean radius ($R_m$) formula:
   $$R_m = \frac{2a+b}{3}$$
   yields $6,371,008.8 \text{ m}$. This value is often incorrectly cited as the true mean radius of the Earth, ignoring the fact that the WGS 84 ellipsoid is intentionally slightly depressed at the poles by an amount correlated with the average ocean tide height recorded during the initial [satellite passes](/entr…