Physics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983rspsa.389..153s&link_type=abstract
Royal Society (London), Proceedings, Series A - Mathematical and Physical Sciences (ISSN 0080-4630), vol. 389, no. 1796, Sept. 8
Physics
13
Artificial Satellites, Atmospheric Effects, Circular Orbits, Orbit Perturbation, Satellite Drag, Satellite Orbits, Diurnal Variations, Geopotential, Gravitational Effects, Satellite Orbits
Scientific paper
The influence of air drag and the geopotential on near-circular satellite orbits with eccentricities less than 0.01 is investigated. A model of the atmosphere that allows for oblateness is developed, in which the density behavior approximates the observed diurnal variation. Derivations are obtained for the differential equations governing the variation in the eccentricity and the argument of the perigee by combining the effects of air drag with those of the earth's gravitational field. Numerical solutions are obtained for these differential equations by using the initial conditions from a series of computed orbits of the satellite 1963-27 A. The developed theory is evaluated by comparing the behavior of the orbital elements predicted by the numerical solution with the observed elements. Values of the atmospheric parameters at heights near 400 km are also obtained.
Boulton W. J.
Swinerd Graham G.
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