Abstract
In order to detect the gravitomagnetic clock effect by means of two counter-orbiting satellites placed on identical equatorial and circular orbits around the Earth with radius 7000 km their radial and azimuthal positions must be known with an accuracy of δr=10-1 mm and δϕ=10-2 mas (milliarcseconds) per revolution. In this work we investigate if the radial and azimuthal perturbations induced by the dynamical and static parts of the Earth's gravitational field meet these requirements. While the radial direction is affected only by harmonic perturbations with periods up to some tens of days, the azimuthal location is perturbed by a secular drift and very long period effects. It results that the present level of accuracy in the knowledge both of the Earth solid and ocean tides, and of the static part of the geopotential does not allow an easy detection of the gravitomagnetic clock effect at least by using short arcs only.
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