Vol. 64, No. 5, 2020

Astronomy Reports

Young Stellar Complexes in the Giant Galaxy UGC 11973

A. S. Gusev, F. Kh. Sakhibov, and O. V. Ezhkova p. 375 abstract

Narrow-Line SY1 NGC 4748 in X-Rays: Detailed Case-Study

A. Vasylenko, E. Fedorova, and A. Del Popolo p. 384 abstract

Survey of Molecular Emission Lines in the WB 673 Interstellar Filament

O. L. Ryabukhina and M. S. Kirsanova p. 394 abstract

Study of Bright Compact Radio Sources of the Northern Hemisphere at 111 MHz

S. A. Tyul’bashev, I. V. Chashei, I. A. Subaev, and M. A. Kitaeva p. 406 abstract

Orbital Decay in High-Mass X-Ray Binaries

S. V. Chernov p. 425 abstract

Mutual Gravitational Energy of Gaussian Rings and the Problem of Perturbations in Celestial Mechanics

B. P. Kondratyev and V. S. Kornoukhov p. 434 abstract

Relativistic Reductions in High-Precision Measurements of the Earth’s Global Gravity Field Using a Multipair Constellation

V. K. Milyukov, I. Yu. Vlasov, M. V. Sazhin, O. S. Sazhina, and V. N. Sementsov p. 447 abstract

Multifactorial Method of Search for Small Bodies in Close Orbits

M. V. Sergienko, M. G. Sokolova, and K. V. Kholshevnikov p. 458 abstract