... астрономическим союзом новой опорной системы координат, основанной на радиоинтерферометрических наблюдениях внегалактических радиоисточников, и завершение создания каталогов HIPPARCOS и TYCHO определяют новые задачи связи систем координат и их поддержания ...
... 100 CCD observations of eight approachments and occultations of stars of Hip parcos, Tycho, GSC and ACT catalogues by asteroids had been carried out with 26--inch Refractor in 1998--2001 (see table below). ...
... Reduction of CCD zones includes several Tycho--2 catalogue stars. Obser vations of satellites obtained at CAAT and Burjassot Campus are described. ...
... The positions and proper motions of 58483 stars in the Pulkovo fields with galaxies on the Tycho-2 system (Pul-3) . ... A.Tsvetkov, A.Popov . Tycho-2 and Hipparcos: intercomparison of the catalogues . I.Verestchagina . ...
... Russia), The positions and proper motions of 58483 stars in the Pulkovo fields with galaxies on the Tycho-2 system (Pul-3 ... 16. A. Tsvetkov, A. Popov (Russia), Tycho-2 and Hipparcos: intercomparison of the catalogues . 17. ...