Cosmic Research, Том 19

according accuracy altitude angle angular approximation assumed asteroid atmosphere average axis body boundary calculated characteristics close cloud coefficient comet components concentration consider coordinates corresponding curves decrease density dependence determined direction distance distribution earth effect electrons energy equal equations errors estimate existence expression flight flux function Geophys given increase indicated integral intensity interval ionosphere ions latitude layer limit lower magnetic field magnetosphere mass maximum mean measurements method motion observed obtained occurs orbit Original parameters particles period perturbations phase plane plasma position possible precipitation presented problem processes protons quantities radiation range region relative respectively ring rotation satellite shown shows solar solution space spacecraft surface Table tion trajectories turbulent upper values variations vector velocity Venus wave wind