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Information × Registration Number 0211U006137, 0109U001869 , R & D reports Title Opposition effects of small Solar system bodies: observations and laboratory modeling popup.stage_title Head Belska Irina Mikolaivna, Registration Date 22-02-2011 Organization Kharkov National University named after V.N. Karazin popup.description2 Research object is non-atmospheric bodies of Solar system; laboratory samples being the analogues of substance making the surfaces of bodies of Solar system. The purpose of work is measurement of phase dependences of lustre of asteroids and laboratory samples; definition of amplitude and other specifications of opposition effect; definition of optical and physical specifications of surfaces of asteroids and their comparison is with results of laboratory simulation; creation of the databank of phase dependences of the asteroids lustre. Methods of research are photometric supervision, computer data processing, laboratory simulation, statistical analysis. Throughout 64 night photometric supervision of asteroids 21 Lutetia, 671 Carnegia, 884 Priamus, 1143Odysseus, 1746 Brower and 2357 Phereclos are conducted and their processing is performed. Lustre curves, absolute stellar sizes, the periods of axial reference, the ratings of BVRI-colour and phase dependences of lustre of these asteroids are received. With high accuracy absolute stellar size of the asteroid 21 Lutetia is determined, which was used for planning of researches of this asteroid from the board of space vehicle “Rosetta”. For the first time detailed phase dependences of lustre of three asteroids-trojan are measured and absence of non-linear growth of lustre on small phase angles is found that it is atypical for the most of non-atmospheric space bodies. Laboratory measurements of phase dependences of three of lowalbedo samples are conducted. It is shown that with increase albedo the surface of laboratory sample amplitude of opposition effect is increased, and with increase of size of particles - it decreases that coincides in quality with data for lowalbedo asteroids. Architecture is developed really the first Databank of phase dependences of the asteroids lustre is created which includes 43 objects, he is located in international database “Planetary Data System”. Results of researches present a significant interest from the standpoint of development of methods of diagnostics of surfaces of non-atmospheric space bodies. Product Description popup.authors Бельська І. Бондаренко С. Величко Ф. Круглий Ю. Лупішко Д. Псарьов В. Слюсарев І. Чорний В. Шевченко В. popup.nrat_date 2020-04-02 Close