...system
Based on observations made with the ESA Hipparcos satellite. 
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...(1993)
In Dick et al. (1993) the 10#10 for HIC 43564 was incorrectly given as -15.4mas/a. The correct figure is -1.5mas/a. 
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...(1995b)
The 33 stars available to us at that time were used. A new computation with the final sample of Hipparcos stars leads to almost identical results for the fraction of problematic cases and the mean expected proper motions. 
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