Hromakina T. Photometry and spectrophotometry of selected small bodies from the outer part of the Solar System

The thesis focuses on the physical properties of the selected small bodies from the outer part of the Solar System by the means of photometric and spectrophotometric observations. An extensive photometric study of the dwarf planet Makemake allowed to determine the rotational period of the dwarf planet that appeared to be much longer that it was previously suggested. An absent of variation for Makemake’s absolute magnitude and lightcurve amplitude was shown. For the first time it was shown that Makemake has a very homogeneous surface and the most probable surface composition was proposed. The level of surface homogeneity of the two largest Jupiter Trojans (624) Hektor and (911) Agamemnon was studied for the first time. Surface composition of these objects appeared to be very similar and homogeneous. For ten Transneptunian objects and Centaurs the estimations of rotational periods and lightcurve amplitudes were made. Among them, for five objects the lightcurves were acquired for the first time. The database of spectral observations for TNOs and Centaurs was created. The database contains nonsimultaneous observations in the visible and near IR spectral range which were linked together using photometric colour measurements. Mean spectra for each taxonomic group of Transneptunian objects and Centaurs were acquired. These spectra can be used to calibrate observations in different photometric systems. It was shown that rotational period of resonant TNOs are on average smaller than those of the classical TNOs and Scattered-disc objects.