Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..16e..39d&link_type=abstract
Nomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 200
Astronomy and Astrophysics
Astronomy
Scientific paper
Even though HIPPARCOS astronomical satellite mission has about two order better positional accuracy than ground-based optical Photographic Zenith Tubes (PZT), it is possible to get more accurate proper motions in declination of HIPPARCOS stars observed during a few decades with PZTs because the HIPPARCOS ESA mission was less than four years long (not enough to obtain a satisfactory accuracy of proper motions for some stars). Here, we used the data observed with ten PZTs (3 at Washington, 2 at Mizusawa and Richmond, 1 at Ondrejov, Punta Indio and Mount Stromlo) that operated during the last century as a part of different Earth rotation programmes. We calculated the corrections to the HIPPARCOS proper motions in declination, and compared them with the corresponding values of the most recent Earth Orientation Catalogue (EOC-2). The results presented here are in good agreement with the EOC-2 ones.
Damljanović Goran
Vondrák Jan
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