Contents

Solar System Research

Vol. 60, No. 4, 2026

Firehose and Mirror Instabilities in Anisotropic Gravitating Heat-Conducting Plasma of the Solar Wind with Kappa Distribution

A. V. Kolesnichenko p. 41  abstract

Oort Cloud Bombardment by Dark Matter

J. Mould p. 42  abstract

Venus Atmospheric Circulation from Two Years of Observations by the UVI/Akatsuki Ultraviolet Camera

M. V. Patsaeva, I. V. Khatuntsev, N. I. Ignatiev, D. V. Titov, and A. V. Turin p. 43  abstract

Structural Convergence of Mascon Gravity Models: A Comparative Study of (16) Psyche and (136108) Haumea

Pryscilla Pires p. 44  abstract

Influence of Mineral Composition and Temperature of the Mantle on the Value of the Chandler Period of Mars

E. A. Kulik and T. V. Gudkova p. 45  abstract

Assessment of the Metallicity of the Atmospheres of Ultra-Hot Jupiter WASP‑121b and WASP‑76b based on Observations in the Lines of He(I) and Fe(II) and Numerical Simulation Using Non-LTE Kinetics

M. S. Rumenskikh, I. F. Shaikhislamov, S. S. Sharipov, A. V. Shepelin, I. B. Miroshnichenko, M. P. Golubovsky, and A. G. Berezutsky p. 46  abstract

Potential Collisions of the Asteroid Apophis with the Earth during a Period of 2023 to 2029

A. F. Zausaev and M. A. Romanyuk p. 47  abstract

The Hot Fraction of Oxygen Atoms in the Earth’s Polar Upper Atmosphere—the Contribution of Odd Nitrogen Chemistry

V. I. Shematovich p. 48  abstract

Oxygen Fugacity Values of Some Terrestrial and Lunar Minerals

S. Voropaev, E. Zharkova, N. Chistyakova, and V. Rusakov p. 49  abstract

Evidence of Dust Activity in Main-Belt Asteroids from Their Reflectance Spectra. 1. The Multiband Photometric Method, Results of Observations of Asteroids in 2023–2025, and Their Analysis

V. V. Busarev, E. V. Petrova, M. P. Shcherbina, M. A. Burlak, and N. P. Ikonnikova p. 50  abstract

Mapping the Spectral Diversity of Lunar Swirls Using Chandrayaan-1 M3 Hyperspectral Images

Bhumi Jadhav, Jayesh Pabari, and Vaishali Bhavsar p. 51  abstract