Astrometric observations of major satellites of Saturn with a 26-inch refractor |
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Authors: | E A Grosheva I S Izmailov T P Kiseleva |
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Institution: | 1.Pulkovo Astronomical Observatory,Russian Academy of Sciences,St. Petersburg,Russia |
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Abstract: | The results of observations of Saturn and its satellites with the 26-inch refractor at Pulkovo are presented. Over the observing
period from January 2008 until May 2009, results were found from more than 5000 CCD frames suitable for measurement. On the
basis of these frames, 183 positions of major satellites of Saturn (with the exception of Mimas) were obtained. The astrometric
reduction was based on the Turner method, with the use of the UCAC2 catalog as a reference. The obtained equatorial coordinates
of satellites were compared with the TASS 1.7 theory, and results of comparison are presented. The accuracy of observed positions
is 0.05″ on average. Positions of Saturn, calculated on the basis of positions of satellites and their theoretical saturnocentric
coordinates according to the TASS 1.7, and the differential coordinates of satellites relative to each other, are also given. |
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