Search academic texts

Information × Registration Number 0306U008699, 0106U008242 , R & D reports Title The study of parameters of the objects of space debris and near-Earth asteroids by the methods of ground-based astronomy popup.stage_title Дослідження методами наземної астрономії параметрів об'єктів космічного "сміття" та астероїдів, що наближаються до Землі Head Lupishko Dmitro Fedorovich, Registration Date 19-12-2006 Organization Kharkov Natuional university named after V.N.Karazin popup.description2 Objects of investigations: geostationary Earth satellites; near-Earth asteroids (NEAs) (11405) 1999 CV3, 2004 XP14, 2006 BQ6 and 2006 RZ. Purpose of the Project is determination of the equatorial coordinates of the geostationary Earth satellites (according to customer's target designations) and newly-discovered NEA 2006 RZ as well as of the physical properties of NEAs (11405) 1999 CV3, 2004 XP14 and 2006 BQ6. Methods of research: CCD-photometric and astrometric observations, numerical modelling, processing and analysis of data. The positional CCD-observations of three geostationary Earth satellites and newly-discovered NEA 2006 RZ were carried out and their equatorial coordinates for 2000.0 were obtained with the absolute errors of 2.5-4.0І for satellites and not more than 0.5І for NEA 2006 RZ. During 13 nights the CCD-photometric observations of near-Earth asteroids (11405) 1999 CV3, 2004 XP14 and 2006 BQ6 were carried out. Their lightcurves, shape elongations, rotation periods (2006 BQ6), absolute magnitudes and sizes (2004 XP14 and 2006 BQ6), the composition type of Apollo-object 1999 CV3 have been obtained. The inverse problem of determination of sidereal period, sense of rotation, pole ecliptical coordinates and axis ratio of NEA (11405) 1999 CV3 have been solved using photometric lightcurves. Most of the results were obtained for the first time, that is why they are of great interest from the point of view of both fundamental science and the asteroid hazard problem. They are also very useful for planning and realization of space missions to these NEAs, for their radar observations and for creation of their physical models. The obtained lightcurves will be included to the international database "Asteroid Photometric Catalogue". Product Description popup.authors popup.nrat_date 2020-04-02 Close