Abstract A theoretical analysis of the variation of the eccentricity and argument of perigee will be reviewed for a satellite in a near-circular orbit perturbed by resonance and the zonal harmonics in the Earth's gravity field. In particular, the implication of resonance on frozen orbits will be discussed. The theory was motivated by analysis of Cosmos 1603 (1984-106A) which during 1987 orbited in near exact commensurability with respect to Φ (14) − ω, where Φ (14) is the usual 14th-order resonance variable and ω the argument of perigee. Consequent motion included a quasi-secular increase in the eccentricity and libration of Φ (14) − ω. With perigee height near 840km and with minimal atmospheric drag due to low solar activity, the satellite was effectively trapped in resonance. Analysis of the eccentricity, inclination and mean-motion has yielded values of lumped harmonic coefficients which will be compared against global gravity field models, e.g. GEM-T1, GEM-T2.


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    Titel :

    A study of near-circular satellite orbits perturbed by the zonal harmonics and in resonance with the Earth's gravity field


    Beteiligte:
    Gilthorpe, M.S. (Autor:in) / Moore, P. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 11 , 6 ; 171-177


    Erscheinungsdatum :

    01.01.1991


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch