Семинар “Малые тела Солнечной системы” (19 октября 2022, 15:00)
Опубликовано: 14/10/2022-
Kravtsova A.S. – Sternberg Astronomical Institute, Moscow State University (SAI MSU)Photometric approach to the observation of taxonomic characteristics of asteroids.With the help of multicolor photometry methods used to observe star catalogs, the possibility of obtaining rough spectra of asteroids without reference to solar analogs is shown. The resulting spectra allow for an accurate classification of asteroids according to Tholen’s taxonomic classes. The suitability for these studies of the APASS catalogue is shown, the limits of acceptable color indices for standard stars are determined. Methods are proposed for preparing the homogeneous photometric sequences from discontinuos observations, to which our program of the periods of the variable stars searching can be applied. No a priori assumptions about the shape of the light curve are need. The technique was applied to observations of asteroids carried out in 2008-2022 at the observatory in Simeiz using a 1-m telescope and showed its effectiveness.Keywords: photometry, spectral class, Tholen classification
Kuzin S.P. – Institute of Astronomy of the RAS, Moscow, Russia
The current status of Russian geodetic networks and prospects of their development
The ground-based measuring networks of currently existing various space geodesy technologies are the basis for the construction and maintenance of the existing Russian terrestrial coordinate systems GSK-2011, PZ-90.11, the fundamental astronomical and geodetic network (FAGS), as well as the prospective Russian global system for monitoring geodetic parameters of the Earth (GSMGPE) being created. The main task of the existing geodetic networks is to provide Russian users with high-precision coordinate-time information. The sites of existing geodetic networks belong to various agencies – Rosreestr, RAS, Roscosmos, Rosstandart and other organizations, which causes certain difficulties for the coordinated operation of networks, storage and exchange of the obtained measurement information. A part of the operating stations of each individual space technology network should be included in the international networks of the corresponding technology for the implementation of mutually beneficial cooperation. The report provides an overview of the existing Russian terrestrial geodetic networks and outlines the ways of their development.
Keywords: geodetic networks, ground station equipment