Abstract
The orbit of Meteor 3 (1970−19 A) has been determined at 52 epochs between August 1978 and January 1980 during which the orbit was perturbed by 15th-order resonance with the geopotential. U.S. Navy, together with Hewitt camera, theodolite, kinetheodolite and visual observations were used in the orbit determination process. The variations in the inclination and eccentricity have been analysed to determine six lumped harmonics of order 15 and two of order 30. In the analysis of the eccentricity an air drag model incorporating an oblate atmosphere with a diurnal density variation was used. The variations in the inclination and eccentricity have previously been analysed by King-Hele and Walker (1982, Proc. R. Soc. A379, 247) using orbits determined by the U.S. Naval Research Laboratory. The aim of this work is to find improved values of the lumped harmonics by using more accurately determined orbits.
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