Solar System Research最新文献

{"title":"Features of Degassing of the Main Silicate Minerals in the Temperature Range 200–1000°C","authors":"S. A. Voropaev,&nbsp;N. V. Dushenko,&nbsp;A. P. Krivenko,&nbsp;V. S. Fedulov,&nbsp;E. V. Zharkova,&nbsp;V. G. Senin","doi":"10.1134/S0038094624700515","DOIUrl":"10.1134/S0038094624700515","url":null,"abstract":"<p>The degassing of basic silicate minerals (olivines, pyroxenes, plagioclases) that make up mantle rocks similar in chemical composition to lunar mare basalts has been studied. A setup specially designed for these tasks was used, previously used in the study of chondrite degassing. The results of experimental studies on stepwise heating (without accumulation) with determination of the composition of released gases using gas chromatography methods in the temperature range from 200 to 1000°C are presented. The composition of the released gases was compared with the fugacity of oxygen in olivines. Raman and IR spectra of both the original minerals and minerals after isothermal annealing at various temperatures were obtained. Based on them, the course of thermal transformation of the crystalline structure of minerals was traced and estimates of their stability were obtained. The composition of silicate minerals was compared with samples of lunar soil delivered by the Chinese space mission <i>Chang’e-5</i>.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"682 - 695"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solution of the Euler–Lambert Problem Based on the Okhotsimsky–Egorov Ballistic Approach","authors":"A. V. Ivanyukhin,&nbsp;V. V. Ivashkin","doi":"10.1134/S0038094624700527","DOIUrl":"10.1134/S0038094624700527","url":null,"abstract":"<p>The paper propose the method for solving the Euler–Lambert problem proposed by V.A. Egorov and based on the works by D.E. Okhotsimsky, devoted to the analysis of a set of flight trajectories between two given points in the central Newtonian field. When considering the Euler–Lambert problem as the inverse problem of ballistics (dynamics), we have succeeded in developing a new effective method for determining the orbit corresponding to a given flight time. It is logical to name this approach the Okhotsimsky–Egorov method. In the considered approach, the parameter of the set of flights is the initial flight-path angle. The advantages of the proposed method are the limited and understandable structure of the domain of definition of solutions, the simplicity and clarity of the algorithm, and the clear dependence of the solution on the initial velocity. It enables a qualitative analysis of flight trajectories and the construction of effective numerical methods. To solve the Euler–Lambert problem Halley’s numerical method was used. A computational complexity analysis of considered algorithm was carried out and demonstrated its high efficiency.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"769 - 779"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of Particles during Surface Destruction of Space Bodies Moving in the Atmosphere","authors":"V. Y. Tugaenko,&nbsp;A. V. Vodolazhsky,&nbsp;R. A. Evdokimov","doi":"10.1134/S0038094624700540","DOIUrl":"10.1134/S0038094624700540","url":null,"abstract":"<p>When passing through the Earth’s atmosphere, cosmic bodies are subjected to significant loads due to the impact of high-speed gas flow on their surface. Under the influence of aerodynamic forces and strong heat flows, these bodies are destroyed. The mechanisms of destruction depend on their composition, structure, speed, size and strength. Artificial space bodies move in the atmosphere, generally maintaining their orientation in space, and reach the surface, maintaining integrity due to their high strength. As a result of surface destruction of the frontal part of these bodies, destruction products enter the plasma layer surrounding them when moving in the atmosphere. The design features of the Soyuz descent vehicle made it possible to study the dust component of the plasma layer from the deposits deposited on the porthole. Data on particles detected on the surface of the spacecraft are analyzed, and the results of a statistical analysis of the resulting particle size distribution are presented. It is shown that the distribution curve is well described by a power law.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"709 - 714"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aerostat Probe for Studying the Atmosphere and Surface of Venus","authors":"V. K. Sysoev,&nbsp;D. S. Khmel,&nbsp;E. N. Slyuta","doi":"10.1134/S0038094624600823","DOIUrl":"10.1134/S0038094624600823","url":null,"abstract":"<p>Based on the successful landings of landing modules (LM) on the surface and the introduction of aerostat probes (AP) into the air, the feasibility of exploring Venus by an AP drifting in the cloud layer of its atmosphere using short-term descents and landings on its surface has been substantiated. Mathematical modeling was performed to confirm the feasibility of short-term AP drops with a scientific package (SP) in a thermostatted compartment for sampling soil, aerosols and gases and remote sensing (RS) in various regions remote from each other near the surface of the planet Venus for their analysis during a long drift at the height of the cloud layer. Using the example of individual SP devices for geochemical and geophysical studies of Venusian rocks, the scenario and capabilities of AP are shown, which significantly expand both the range of scientific tasks to be solved and the capabilities of the scientific equipment itself.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"640 - 649"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sublimation-Driven Dust Activity of Primitive-Type Asteroids as a Sign of the Presence of Н2О Ice","authors":"V. V. Busarev,&nbsp;E. V. Petrova,&nbsp;M. P. Shcherbina,&nbsp;M. A. Burlak,&nbsp;N. P. Ikonnikova,&nbsp;M. V. Maksimova","doi":"10.1134/S0038094624700503","DOIUrl":"10.1134/S0038094624700503","url":null,"abstract":"<p>In the period December 12, 2022, to February 28, 2023, we performed a series of <i>UBVRI</i> observations of 65 asteroids, including 50 primitive-type objects, which could be observed near perihelion at that time, and calculated their approximated reflectance spectra. The observations were aimed at searching for spectral signs of sublimation-driven dust activity in the asteroids and formation of a transient dust exosphere, which are caused by the presence of Н₂О ice in their interior and the highest subsolar temperature. Based on the analysis of the accuracy and shape of approximated reflectance spectra of the primitive-type asteroids, a set of which was conventionally restricted by the geometric albedo value not exceeding 0.10, we found sublimation-driven dust activity in asteroids 164 Eva, 360 Carlova, and 750 Oskar by distinct short-term variations in the reflectance of these asteroids in the <i>U</i> band. During one of the nights, similar spectral changes and sublimation-driven dust activity related to them were detected in asteroid 629 Bernardina; the geometric albedo of this asteroid is somewhat higher (0.14 or 0.19), which may be indicative of a heterogeneous composition of its material and, apparently, a local outcropping of water ice on its surface. Moreover, in three asteroids of a high-temperature type, 757 Portlandia, 1121 Natascha, and 1687 Glarona, noticeable variations were detected in the entire spectral range; they may be connected with ejection of submicron dust particles from the surface by some other mechanisms. To substantiate and interpret the results of observations, we numerically modeled the reflectance spectra of conditional asteroids of taxonomic types C and S (with low- and high-temperature mineralogy, respectively), which are enveloped by an optically thin dust exosphere containing aggregate or homogeneous submicron particles of different composition. On the basis of this modeling, we introduce a quantitative criterion to identify a weak sublimation-driven dust activity in primitive-type asteroids in the visible range.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"715 - 731"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Modified Potential and Quantum Correction in the Generalized Perturbed Interacting CR3BP with Variable Mass","authors":"Abdullah,&nbsp; Majhar Ali","doi":"10.1134/S0038094624601385","DOIUrl":"10.1134/S0038094624601385","url":null,"abstract":"<p>The aim of this paper is to investigate the motion properties of the infinitesimal body under the effects of gravitational forces, the quantum correction, variable mass, modified Newtonian force, interaction between bodies, triaxial parameters, Coriolis and centrifugal forces in the restricted three-body configuration. Using Jeans law, Meshcherskii space-time transformations and the above perturbations, we evaluate the equations of motion and quasi-Jacobian integral. And then, we numerically illustrate the locations of equilibrium points, regions of motion, Poincare surfaces of section, basins of attraction, periodic orbits and stability of the equilibrium points.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"745 - 758"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Variation Lines and Modeling of Initial Trajectory Dispersion in the Presence of Strong Nonlinearity in Orbit Improvement Problems","authors":"A. P. Baturin","doi":"10.1134/S0038094624600951","DOIUrl":"10.1134/S0038094624600951","url":null,"abstract":"<p>A method for determining the lines of variation (LOV) in the initial confidence region under strong nonlinearity in the orbit improvement problem is developed, based on finding the maximum modulus of the normal vector to the level surfaces of the objective function using the least-squares method. The method was tested for three asteroids using their observations on a short arc of the orbit, namely, the points of two variation lines corresponding to the directions of the greatest deformation of the initial confidence region were determined. Approximation of variation lines was performed using third-degree polynomials. Using the obtained approximations, new variables were introduced in which the initial confidence region is almost ellipsoidal, i.e., nonlinearity is nearly absent. The modeling of the initial probability dispersion of trajectories is performed in the space of new variables. The resulting dispersion can be further used to identify collision orbits and estimate the probability of asteroid collisions with Earth.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"759 - 768"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the Dynamical Evolution of the Compact Planetary System Kepler-51","authors":"E. D. Kuznetsov,&nbsp;A. S. Perminov","doi":"10.1134/S0038094624700394","DOIUrl":"10.1134/S0038094624700394","url":null,"abstract":"<p>This paper examines the dynamic evolution of the compact three-planet system Kepler-51. Possible resonant states of the system are analyzed and a search for potential chains of mean motion resonances is carried out. Using the Posidonius software package the dynamic evolution of the system is studied over a time interval of 100 Myr, taking into account tidal interaction. Also, for various initial values of eccentricities, inclinations, arguments of periapsis and longitudes of the ascending nodes of orbits, modeling of the dynamic evolution of the planetary system is carried out within the framework of the semi-analytical theory of motion. It is shown that the compact planetary system Kepler-51 is not resonant. Under initial conditions corresponding to the masses and elements of the planets’ orbits, determined from observations taking into account their errors, the evolution of the system is stable and regular over the studied interval of 100 Myr.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 5","pages":"594 - 611"},"PeriodicalIF":0.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Photocenter Shift Phenomenon in Positional Observations of Active Asteroids (6478) Gault and (248370) 2005 QN173/433Р","authors":"S. R. Pavlov,&nbsp;Yu. A. Chernetenko","doi":"10.1134/S0038094624700412","DOIUrl":"10.1134/S0038094624700412","url":null,"abstract":"<p>Active asteroids are the Main-Belt asteroids that manifest physical signs of cometary activity, such as the presence of coma and tails and significant changes in brightness. This raises the question of whether these bodies require a more sophisticated approach to specifying the orbital parameters as compared to ordinary asteroids. In this work, we performed a series of improvements in the orbital parameters of active asteroids (6478) Gault and (248370) 2005 QN173/433P both with taking into account nongravitational accelerations (NGAs), which is common for comets, and without this procedure. For time intervals coinciding with the periods of activity of the considered asteroids, we have found statistically significant systematic deviations in the residuals (O–C) between the observed and calculated values in the positional observations of these bodies. Our results show that taking into account the nongravitational acceleration according to the Marsden model does not improve the representation of the observations. We also considered the possibility of the photocenter shift (PS) presence in the positional observations, i.e., the offset between the center-of-light and the center-of-mass. The obtained PS for asteroids (6478) and (248370) are directed away from the Sun with the values of 985 ± 54 and 1145 ± 119 km respectively, which is close to the sizes of the Hill spheres of the bodies. Taking into account the PS effect, one can eliminate the systematic deviations in the residuals for asteroid (248370) and significantly reduce them for asteroid (6478).</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 5","pages":"586 - 593"},"PeriodicalIF":0.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Propagation of Hydromagnetic Disturbance Waves and Gravitational Instability in a Magnetized Rotating Heat-Conducting Anisotropic Plasma","authors":"A. V. Kolesnichenko","doi":"10.1134/S0038094624700382","DOIUrl":"10.1134/S0038094624700382","url":null,"abstract":"<p>The hydrodynamic instability of a magnetized, self-gravitating rotating anisotropic plasma is analyzed in the collisionless approximation and considering the heat flux vector based on the modified Chu–Goldberger–Low equations. A dispersion relation is obtained, on the basis of which simplified cases of propagation of low-amplitude disturbance waves and the derivation of modified criteria for hydrodynamic instability are discussed. Using the obtained dispersion relation, three simple cases are treated when the disturbance wave propagates across, along, and obliquely to the magnetic field vector. It is shown that the anisotropy of pressure and heat flow not only changes the classical criterion of the Jeans instability, but also leads to the appearance of new wave modes and causes the appearance of new unstable domains. It has been found that the presence of uniform rotation of the plasma reduces the critical wave number and has a stabilizing effect on the criterion of gravitational instability when the disturbance wave propagates transversely, without having an effect in the case of longitudinal propagation. These results are important for developing evolutionary magnetohydrodynamic models of astrophysical collisionless plasma.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 5","pages":"549 - 560"},"PeriodicalIF":0.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}