Contents

Cosmic Research

Vol. 59, No. 6, 2021

Variations of Protons and Doubly Ionized Helium Ions in the Solar Wind

A. A. Khokhlachev, M. O. Riazantseva, L. S. Rakhmanova, Yu. I. Yermolaev and I. G. Lodkina p. 415  abstract

The Experimental Spectrum of Variations of Cosmic Rays in a Wide Range of Hardness According to AMS-02 Data

V. G. Yanke, A. V. Belov, N. S. Shlyk, P. G. Kobelev and L. A. Trefilova p. 427  abstract

Dynamics of the Radiation Environment in the Near-Earth Space in September–November 2020 according to the Meteor-M and Electro-L Satellite Data

I. N. Myagkova, A. V. Bogomolov, V. E. Eremeev, A. O. Shiryaev and E. A. Ginzburg p. 433  abstract

Space–Time Structure of Energetic Electron Precipitations according to the Data of Balloon Observations and Polar Satellite Measurements on February 1–6, 2015

A. D. Kugusheva, V. V. Kalegaev, N. A. Vlasova, K. A. Petrov, G. A. Bazilevskaya and V. S. Makhmutov p. 446  abstract

On Possible Causes of Positive Disturbance of Global Electronic Content during a Complex Heliogeophysical Event on September 2017

M. V. Klimenko, V. V. Klimenko, F. S. Bessarab, A. V. Timchenko, I. A. Mironova and E. V. Rozanov p. 456  abstract

Spatial Structure of Polarization Jet according to NorSat-1 and Swarm Satellite Data

A. A. Sinevich, A. A. Chernyshov, D. V. Chugunin, W. J. Miloch and M. M. Mogilevsky p. 463  abstract

Long-Living Meteoroids Formed during Radial Expansion of Large Meteoroids

A. V. Mikhalev p. 472  abstract

Characteristics of the Martian Magnetosphere according to the Data of the Mars 3 and Phobos 2 Satellites: Comparison with MGS and MAVEN Results

T. K. Breus, M. I. Verigin, G. A. Kotova and J. A. Slavin p. 478  abstract

Observation of Plasma Instability on the Dayside Region between Magnetosheath and Ionosphere of Mars

K. I. Kim and S. D. Shuvalov p. 493  abstract

Adaptive Neural Formation-Keeping Control for Satellites in a Low-Earth Orbit

M. G. Shirobokov and S. P. Trofimov p. 501  abstract

Optimization of Perturbed Spacecraft Trajectories Using Complex Dual Numbers. Part 2: Numerical Results

V. G. Petukhov and Sung Wook Yoon p. 517  abstract

Satellite Angular Motion under the Action of SDOT Magnetic One Axis Sun Acquisition Algorithm

D. S. Roldugin, S. S. Tkachev and M. Yu. Ovchinnikov p. 529  abstract

Errata

Erratum to: Use of the DBM Model to the Predict of Arrival of Coronal Mass Ejections to the Earth

K. B. Kaportseva and Yu. S. Shugay p. 537  abstract

Erratum to: The Influence of the Earth’s Oblateness on the Energy Integral and Some Characteristics of a Spacecraft’s Orbit

V. V. Ivashkin p. 538  abstract

Erratum to: Determination of the Probability of Collision of Near-Earth Space Objects Taking into Account Form and Orientation

M. O. Karatunov, A. A. Baranov and A. R. Golikov p. 539  abstract