Diana W. Scott

TL;DR: In this paper, the authors developed the theory for orbits of eccentricity less than 0.2 with a more realistic atmospheric model in which H varies linearly with height y: it is assumed that μ = dH/dy is less than 2.2.

TL;DR: In this article, the rotational speed of the upper atmosphere, mainly at heights of 200-300 km, is evaluated from the changes in the orbital inclinations of thirteen satellites, at dates between late 1962 and early 1966, i.e. when solar activity was low.

TL;DR: In this article, the odd zonal harmonics in the Earth's gravitational potential were evaluated by analysing the variations in orbital eccentricity of 22 satellites, chosen to give the widest and most uniform possible distribution in semi major axis and inclination.

TL;DR: In this paper, the density of the upper atmosphere at heights between 1080 and 1170 km is evaluated from the change in the orbital period of Echo 2 for dates between February 1964 and December 1965.

TL;DR: In this paper, the odd zonal harmonics in the Earth's gravitational potential were determined by analysing the changes in the eccentricities of six satellites having orbital inclinations spaced as uniformly as possible between 28° and 96°.