The reference coordinate systems in the modern astrometry

1Fedorov, PN, 1Akhmetov, VS, 2Shulga, AV
1Institute of Astronomy of Kharkiv National University, Kharkiv, Ukraine
2Scientific-Research Institute «Mykolaiv Astronomical Observatory», Mykolaiv, Ukraine
Kosm. nauka tehnol. 2010, 16 ;(6):68-74
Publication Language: Russian
The basic principles for construction of modern reference coordinate systems in astrometry are stated. The characteristics of the main catalogues realizing the ICRS are presented. Proper motions from the UCAC3 and PPMXL catalogues are compared with ones from the XPM catalogue which is an independent realization of the ICRS in optical and near infrared regions. The conclusion is made that the XPM catalogue as the most precise one in a random and systematic senses should be used for the majority of applied metrological problems.
Keywords: catalogues, coordinate systems, ICRS
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