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Positional and multicolor photometric observations of near-Earth asteroids were carried out using the SBG telescope of the Kourovka Astronomical Observatory of Ural Federal University and the Zeiss-1000 telescope of the Simeiz Observatory of INASAN in 2022–2023. Based on the results of positional observations with the SBG telescope, improved orbital elements were obtained for seven asteroids. The periods of axial rotation of seven asteroids were estimated from photometric observations. Based on the results of photometric observations in the B, V, R, I filters, color indices were obtained for six asteroids. [ABSTRACT FROM AUTHOR]

We consider prospects for investigating asteroids with the multicolor photometric method at the Robophot telescope—a robotic telescope of the Dall–Kirkham system with a 0.6-m primary mirror and a focal length of 4.2 m. It is equipped with a three-channel photometer with the g', r', and i' filters of the SDSS photometric system, and the field of view is 20′. The use of a three-channel photometer in observations of small bodies will make it possible to construct multicolor light curves without phase delays. Diagrams of the r' – i' and g' – r' color indices will provide the means of classifying the C- and S-type asteroids. From the high-accuracy light curves, the rotation parameters of asteroids can be determined, for which it is necessary to take the Yarkovsky effect into account correctly. The results of multicolor photometric observations at the Robophot telescope will allow for solving complex scientific problems related to the studies of the physical and dynamic evolution of small bodies in the Solar System. [ABSTRACT FROM AUTHOR]

We present photometric observations of 25 small asteroids from different families (Eos, Erigone, Flora, Maria, Massalia, Phocaea and Zita) and dynamical groups. We derive their synodic periods and lightcurve amplitudes, as well as V–R color indices, and absolute magnitudes. Furthermore, we revise their albedos using the determined absolute magnitudes. Three of the objects are studied for the first time. We also make estimates of the diameters of four asteroids. Many of the observed asteroids have short rotation periods and small amplitudes of the lightcurves, which may be indicative of their potential binary nature. Our photometry in combination with future data can be used in further studies. Analysis of the parameters obtained for the observed asteroids, such as absolute magnitudes, revised albedos, as well as color indices obtained from the SDSS and Sky-Mapper surveys, makes it possible to effectively classify them taxonomically. • Photometry of asteroids. • The families of asteroids. • Lightcurves and rotational period, of small asteroids. • Color indices and absolute brightness of small asteroids. • Albedo of asteroids. [ABSTRACT FROM AUTHOR]

Abstract: We present the results of absolute photometry – the absolute brightness H V , the effective diameter, (B)VR color indices, composite light curves, period of rotation and amplitude of variations – of several small asteroids in the inner main-belt: 1344 Caubeta, 1401 Lavonne, 2947 Kippenhahn, 3913 Chemin, 3956 Caspar, 4375 Kiyomori, 4555 1987 QL, 5484 Inoda, 5985 1942 RJ, 6949 Zissell and main-belt asteroid 6867 Kuwano. The photometric observations of these objects were made in the period 2007–2009 as part of a project of photometric studies of small main-belt asteroids that involves a collaboration of a number of asteroid photometrists around the world. [Copyright &y& Elsevier]