Results of Polarimetric Monitoring of Near-Earth Asteroids at the 2.6-m KrAO Telescope and the 2-m Telescope of the Terskol Peak Observatory

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Solar System Research Pub Date : 2025-06-23 DOI:10.1134/S0038094624601968

M. P. Shcherbina, N. N. Kiselev, N. V. Karpov, E. A. Zhuzhulina

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Abstract

The article presents preliminary results of polarimetric monitoring of near-Earth asteroids (NEA), carried out with 2.6-meter telescope of the Crimean Astrophysical Observatory and the 2-meter telescope of the Terskol Peak Observatory. As part of the observations, 19 phase dependences of NEA polarization were obtained, and for such data were obtained for the first time for 17 asteroids, which significantly supplemented the existing polarimetric database. Near-Earth asteroids can be observed at large phase angles, which allows us to significantly expand our knowledge of the phase dependences of asteroids of different spectral classes—S, C and E. An asteroid with an extremely high degree of polarization, 25 330 (1999 KV4), has been discovered, reaching 38.5% at a phase angle of 75.7°, which suggests the presence of sublimation-dust activity. In addition, asteroids 52768 and 159402 exhibited similar orbital parameters and polarization values, suggesting that they are parts of the same parent body.

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Terskol峰天文台2.6 m kao望远镜和2 m望远镜近地小行星偏振监测结果

本文介绍了克里米亚天体物理天文台的2.6米望远镜和Terskol峰天文台的2米望远镜对近地小行星进行偏振监测的初步结果。作为观测的一部分，获得了19个NEA偏振的相位依赖关系，并首次获得了17颗小行星的此类数据，这大大补充了现有的偏振数据库。近地小行星可以在大相位角观测，这使我们能够大大扩展我们对不同光谱类别（s， C和e）小行星的相位依赖性的知识。一颗极化程度极高的小行星，25 330 (1999 KV4)，已经被发现，在相位角为75.7°时达到38.5%，这表明存在升华尘埃活动。此外，小行星52768和159402表现出相似的轨道参数和极化值，表明它们是同一个母体的一部分。

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来源期刊

Solar System Research 地学天文-天文与天体物理

CiteScore

1.60

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.