...$\pi = 747.1 \pm 1.2$ mas

One should note that there is a rather broad distribution of parallax values for $\alpha$ Cen in the literature, as discussed in Paper I. While the value from Söderhjelm (1999) is the result of a careful reprocessing of the Hipparcos data, the possibility of a bias beyond the stated 1 $\sigma$ error cannot be completely excluded, in particular, due to the extreme brightness and binarity of $\alpha$ Cen.

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