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Observation of the grazing occultation of the star TYC 1280-832-1 by the asteroid (486) Cremona

Kleshchonok, V. V.; Karbovsky, V. L.; Buromsky, M. I. +1 more

A description of the method for observing the occultation of stars by asteroids at the astronomical complex for observing the occultation of stars by Soiar system bodies is given. The complex uses an Apogee Alta U47 CCD camera as a light deiector, which operates in a time delay and integration (TDI) mode. Results of the study of the ocultation phe…

Catalog of positions and B magnitudes of stars of the part of Kitab northern sky survey (FON) project

Andruk, V. M.; Muminov, M. M.; Yuldoshev, Q. X. +3 more

The works of processing of Kitab's plates of FON project was completed. It was used 1963 plates. The catalogue of equatorial coordinates and B-magnitudes of 13 413 268 stars and galaxies up to B ≤ 17.5m for the epoch 1984.97 was compiled. The Epson Expression 10000XL scanner was used for digitization with the mode 1200 dpi, the size of plates are …

A catalogue of candidate Red Clump stars in the Tycho-2.

Rybka, S. P.

The separation of red horizontal branch giants from reduced proper motions

Rybka, S. P.

The possibility to use reduced proper motions for distinguishing red horizontal branch giants from foreground stars is substantiated. Our approach is developed on the basis of HIPPARCOS astrometric data and near-infrared 2MASS photometric data taken from the UCAC2 BSS catalogue. The application of maximum-likelihood technique to analyse the distri…

Graphical method for estimation of accuracy of astrometric catalogues

Nefedjev, Yu. A.; Rizvanov, N. G.; Rakhimov, L. I. +1 more

We propose a new method for the estimation of the accuracy of star positions and proper motions in astrometric catalogues based on the comparison of the star positions in catalogue a under investigation and the HIPPARCOS catalogue in various epochs but for a standard equinox. In this case the comparison results are represented as a curve. On the a…

Catalogue of stars with high proper motions (version 1)

Ivanov, G. A.

A catalogue (astrometric and astrophysical parameters) of 251000 stars with high proper motions (more than 40 mas/year) was compiled using original determinations from FONAK1.0 catalogue, data from the catalogues Hipparcos, Tycho-2, CMC11, PPM, NPM1, NLTT, GCVS, as well as the data from published sources (ftp://ftp.mao.kiev.ua/pub/astro/h-pms.dat)

Local kinematics of dwarfs from the Tycho-2 data

Rybka, S. P.

The stellar velocity field of about 70000 dwarfs within 2 kps from the Sun is investigated from the "Tycho-2" data and known MK spectral classification. The Ogorodnikov-Milne model of a three-dimensional differential velocity field is used. The generalized Oort constants and components of the solar motion with respect to various spectral groups ar…

Compiled catalogue of stellar proper motions in the Hipparcos system in MEGA program areas

Kharchenko, N. V.

The compiled catalogue of proper motions in the Hipparcos system MEGA-H is created for 18169 stars. The data of the original catalogue (MEGA-G) and All-Sky Compiled Catalogue of 2.5 million stars (ASCC-2.5) are used. The errors of magnitude equation and zero-point are taken into account in each 47 program areas individually.

A comparison of some astrometric catalogues with the use of stars with large proper motions

Yatsenko, A. I.; Ivanov, G. A.

Pairwise differences of positions and proper motions of stars from the catalogues HIPPARCOS, CMC11, FONAC, NPM1, and PPM were used to determine their random and systematic errors. A significant relationship between differences of coordinates and proper motions of stars and their B-V colour indices was found for some pairs of the catalogues.

Compiled catalogue of MK spectral classifications, including astrometric and photometric data

Rybka, S. P.

The catalogue constructed as a tool for stellar kinematic analysis is described. It contains up-to-date information on spectral classifications in the MK system, positions and proper motions in the ICRS system, as well as BV magnitudes for 71334 single stars. Astrometry and photometry were mainly selected from the Tycho-2. MK spectral types and lu…