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Table 3

Parameters of the Hipparcos astrometric observations.

Target HIP Nmeas Time span σ
name [days] [mas]

HD 10844 8285 94 1069 3.34
HD 14348 10868 82 1096 1.69
HD 18757 14286 129 1043 2.59
HD 72946 42173 61 759 1.71
HD 209262 108761 57 1084 3.23

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