Other
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37..351w&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 37, March 1989, p. 351-362.
Other
2
Cosmos Satellites, Orbit Calculation, Orbital Resonances (Celestial Mechanics), Geoids, Geopotential Height, Harmonic Analysis, Orbital Mechanics
Scientific paper
The orbital parameters of Cosmos 220 rocket (1968-40B) have been determined at 74 epochs from some 6300 observations. For 38 of the determinations, Hewitt camera observations were available. The orbit was determined from January 1983 to July 1985, and during this time the satellite passed through 29:2 resonance. The variations in inclination and eccentricity have been analyzed to determine six lumped geopotential harmonics of order 29. The first two have standard deviations equivalent to accuracies of 0.3 and 0.6 cm in geoid height, better than has previously been determined for order 29 by resonance analysis or any other method. The standard deviations of the other four values correspond to accuracies between 1.2 and 3.5 cm in geoid height. The results are independent of recent comprehensive geoid models and are used to test five such models: the comparisons show that the estimated errors given for the models are quite realistic.
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