Krugly Y. Photometry of near-Earth asteroids

The work is devoted to investigation of the physical properties of near-Earth asteroids (NEAs). The results base on the wide photometric observational program, which was directed to obtaining rotational parameters, shape of bodies and optical properties of NEAs. In frame of European program EUNEASO (EUropean Near-Earth Asteroids Search Observatories) the regular CCD observations of NEAs have been organized for the first time in the former countries of the USSR. 400 lightcurves of 90 NEAs were obtained during 350 nights of photometric observations. The astrometry more than 100 NEAs has been done.The rotational periods of 40 NEAs have been determined for the first time or noticeably improved. The observations of three NEAs have been carried out up to phase angle less then 1 degree. Several NEAs were observed in a wide range of phase angles and aspects. Four NEAs have been found to show a two-period lightcurves, which have been interpreted as binary systems. Rotational periods and lightcurve amplitudes ofNEAs have been analyzed.