Procedures used to directly determine the positions of twelve radio sources in the frame of the Carlsberg Automatic Meridian Catalogues are discussed. We show that the precision and accuracy of these positions is solely limited by the CAMC and that this will remain the case when the CAMC is rereduced using the results from the Hipparcos mission. We discuss how this data will help the ultimate tie of the Hipparcos coordinate system to the extragalactic reference frame and other ongoing projects at Torino to address this problem.
IAU Joint Discussion
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