Highly accurate determination of the coordinates and the Earth’s rotation parameters involving the Svetloe VLBI Observatory

Autor:	Zinovy Malkin, S. G. Smolentsev, V. G. Grachev, A. V. Ipatov, A. M. Finkelstein, I. A. Rakhimov
Rok vydání:	2003
Předmět:	Physics International Terrestrial Reference System Nutation Astronomy Astronomy and Astrophysics Rotation Radio astronomy observatory law.invention Space and Planetary Science law Observatory Universal Time Very-long-baseline interferometry Earth's rotation
Zdroj:	Astronomy Letters. 29:667-673
ISSN:	1562-6873 1063-7737
DOI:	10.1134/1.1615335
Popis:	We present the results of our processing of the first observations of extragalactic radio sources obtained with the eight-element International VLBI Network, which includes the Svetloe Russian Radio Astronomy Observatory equipped with a Mark 3A recording terminal. Our observations and their processing yielded highly accurate coordinates (in meters) of the Svetloe Observatory in the ITRF 2000 system: X = 2730173.854 ± 0.002, Y = 1562442.668 ± 0.004, Z = 5529969.069 ± 0.007. We also show that including the Svetloe Observatory in the International Network led to an appreciable improvement in the accuracy of determining the Earth’s rotation parameters (microarcseconds for the coordinates of the pole and nutation angles, microseconds for Universal Time): Xp = −154683 ± 77, Yp = 361809 ± 59, UT1-UTC = −325162.9 ± 2.5, Δψ = −53147 ± 114, Δe = −2286 ± 47.
Databáze:	OpenAIRE
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