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Information × Registration Number 0223U001449, 0120U102322 , R & D reports Title Physical properties of planetary regoliths of Solar system bodies. popup.stage_title Head Shkuratov Yurij G., Доктор фізико-математичних наук Registration Date 28-01-2023 Organization V.N. Karazin Kharkiv National University popup.description2  The analysis of the available volume of space orbital spectrophotometry data for the asteroids (101955) Bennu, (162173) Ryugu, the nuclei of comet 67P/Churyumov-Gerasimenko obtained by the OSIRIS-REx, HAYABUSA-2 and Rosetta spacecraft was carried out. It was shown that the application of the method of phase ratios to the surfaces of small-sized bodies (hundreds of meters - the first kilometers in diameter), the regolith of which differs significantly from the regolith of the Moon in the distribution of particles in size, and is differentiated by the absence of particles of micron sizes, requires extremely accurate consideration of topography, with the transition from the relief model to the models of individual stones, because it is the stones that are the dominant element of the microrelief of these bodies. The influence of the grain size of the lunar regolith on the behavior of the phase curve is analyzed using data from the distribution maps of the average size of the regolith grains obtained from linear polarization observations and LROC WAC photometric data in the spectral channel of 0.604 microns. It is shown that within the errors of the observational data in the region 0o - 6o the slope of the phase dependence does not correlate with the diameter of the particles, in the range up to 20o the phase curve is significantly controlled only by the level of albedo. It was concluded that the effect of coherent reverse scattering between individual particles for the surface of the Moon is minimal, even at small phase angles. IMP surfaces in the Moon's craters were investigated according to LROC NAC by phase ratios. Spatial distributions of spectral indices indicate the presence of a relatively small exposure age in IMP with differences in chemical composition, indicating surface renewal with subsurface outcrop structures, i.e. local regolithic movement. Distributions of optical characteristics (color indicators, brightness) of six selected surface areas of the aster Product Description popup.authors Belskaya Iryna М. Velichko Sergey F. Vovk Volodymyr I. Vorobyova Nataliya O. Golubaev Oleksandr V Dovgopol Anatoliy I. Kaydash Vadym H. Korokhin Viktor Valentinovich Krugly Yurij M. Mikhalchenko Olga I. Marchenko Gennadiy Petrovich Opanasenko Mykola Viktorovych Psarov Volodymyr O. Slyusarev Ivan H Surkov Yehor S. popup.nrat_date 2023-01-28 Close