Cosmic Research, Том 28

12 issues acceleration algorithm altitude amplitude angle angular velocity approximation assume atmosphere axis bistatic radar boundary calculated center of mass characteristic coefficient comet Halley components consider coordinate system corresponding craters curve dependence determined distribution dynamics Earth elastic electric field electron density energy equations estimate flux frequency function geomagnetic Geophys Gorizont gyroscopic heavy ions increase inertia instability interval ionization ionopause ionosphere Issled km/sec Kosm Kosmicheskie Issledovaniya linear LITERATURE CITED magnetic field magnetosphere maneuver matrix maximum measurements method Moscow motion Nauka observed obtained optimal orbit Original article submitted oscillations parameters particles period perturbations Phobos plane plasma probe problem protons radiation radio waves region rotation Russian satellite solar activity solar wind solution space spacecraft spectra stability temperature tensor theorem thermosphere tion trajectory Translated from Kosmicheskie v₁ values variables variations vector Venus