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- King-Hele, D.G. (author), Walker, D.M.C. (author) report 1985
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King-Hele, D.G. (author)The satellite 1967-11G which had an orbital inclination of 40°, passed through 14th-order resonance with the Earth's gravitational field in 1974. The changes in its orbital inclination at resonance have been analysed to obtain values for four lumped 14th-order harmonies in the geopotential, with accuracies equivalent to about 5 cm in geoid...report 1985
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King-Hele, D.G. (author), Walker, D.M.C. (author)The analysis of variations in satellite orbits when they pass through 15th-order resonance (15 revolutions per day) yields values of lumped geopotential harmonies of order 15, and sometimes of order 30. The 15th-order lumped harmonies obtained from 24 such analyses over a wide range of orbital inclinations are used here to determine individual...report 1984
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King-Hele, D.G. (author)Cosmos 482 (1972-23A) was launched on 31 March 1972 into an orbit of eccentricity 0.42 inclined at 52° to the equator, and decayed on 5 May 1981. Orbits have been determined daily in the last 15 days of its life from NORAD and US Navy observations, with the aid of the RAE orbit determination program PROP 6. The orbital accuracy was about 40 m...report 1983
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King-Hele, D.G. (author), Walker, D.M.C. (author)We review and interpret the values of upper-atmosphere rotation rate (zonal winds) obtained by analysing satellite orbits determined from observations.report 1982
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- King-Hele, D.G. (author), Walker, D.M.C. (author) report 1981
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King-Hele, D.G. (author), Walker, D.M.C. (author)Satellite orbits contracting under the influence of air drag experience 15th-order resonance when the track over the Earth repeats after 15 revolutions. If the orbital decay rate is slow enough, an orbit passing through the resonance is appreciably perturbed by the effects of 15th-order harmonies in the geopotential. We have used the observed...report 1981
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King-Hele, D.G. (author)The satellite 1971-54A entered a near-circular orbit with period 95.9minutes and inclination 90.20. Between 1972 and 1978 the orbit passed slowly through 15th-order resonance, when the track over the Earth repeats af ter 15 revolutions, and the 15th- and 30th-order harmonies in the geopotential may produce substantial orbital perturbations. The...report 1980
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- King-Hele, D.G. (author), Brookes, C.J. (author), Cook, G.E. (author) report 1980
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- King-Hele, D.G. (author), Walker, D.M.C. (author), Gooding, R.H. (author) report 1978
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King-Hele, D.G. (author)The satellite 1966-51C was launched in June 1966 into a polar orbit with perigee height 180km, apogee height 3600km, and orbital period 125 minutes. The orbit contracted rapidly under the influence of air drag, and the satellite decayed in March 1967. The only available observations are from the NASA Minitrack system, and 825 of these have been...report 1976
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- King-Hele, D.G. (author), Walker, D.M.C. (author) report 1975
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King-Hele, D.G. (author), Rees, J.M. (author)The density of the upper atmosphere at heights of 200-750 km is calculated from the rate of decrease of orbital period for 38 satellites at dates between October 1957 and January 1963. The air density at these heights is strongly linked with solar activity, and as solar activity declined between 1958 and 1962, the density decreased greatly, by a...report 1963
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Rees, J.M. (author), King-Hele, D.G. (author)A Table is given of all known artificial satellites launched before 1st January, 1963, with lifetimes, weights, dimensions and details of the orbits, whenever known, for all instrumented satellites and their rockets. Other fragments from the satellites are listed without these details. The methods used in compiling the Table and the difficulties...report 1963
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- King-Hele, D.G. (author), Cook, G.E. (author), Rees, J.M. (author) report 1963
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- King-Hele, D.G. (author), Cook, G.E. (author) report 1962
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Hughes, J.M. (author), King-Hele, D.G. (author)A Table is given of all known artificial earth satellites, including fragments, launched before 1st January, 1962, with lifetimes, weights, dimensions and details of the orbits at specified dates. The methods used in compiling the Table and the difficulties encountered are briefly described.report 1962
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- King-Hele, D.G. (author), Hughes, J.M. (author) report 1962
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King-Hele, D.G. (author)The effect of air drag on satellite orbits of eccentricity e less than 0.2 was studied in Parts I and II. Here the theory for values of e between 0.2 and 1 is presented. Equations are derived which show how perigee distance and orbital period vary with eccentricity during the satellite's life, and how eccentricity is related to time; and...report 1962
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King-Hele, D.G. (author)The sttdies of earth-satellite orbits at R.A.E., between 1957 am 1961 are reviewed historioally in the main text of this Report. The topics covered include prediotion methods, the determination of orbits from observations, orbital theory, and the geophysical information derived from measuring orbital perturbations. Papers written on these topics...report 1961