Evaluation of 14th-order harmonics in the geopotential

Astronomy and Astrophysics – Astronomy

Scientific paper

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Geopotential, Harmonic Analysis, Orbit Calculation, Satellite Orbits, Tesseral Harmonics, Astronomical Models, Eccentricity, Orbital Elements, Tables (Data)

Scientific paper

Values for normalized coefficients of two series of tesseral harmonics of order 14 and degree 14 through 22 are presented. The harmonics were evaluated by analyzing changes in satellite orbits which experience 14th-order resonance. Orbits of 11 satellites were examined for occasions when the track over the earth repeats after 14 revolutions, and variations in inclination and eccentricity of orbits passing through 14th-order resonance under the action of air drag are considered. The coefficient values are compared with coefficients predicted by three recent geoid models, and agreement and discrepancies are noted.

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