Fig. 1
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Composite image of Proxima obtained by co-adding all HST exposures, properly normalized, from October 2012 to February 2025. The colored line represents the motion of Proxima predicted by our astrometric fit (see Sect. 3.3), with the color changing from blue to white to red as the epoch increases (see also labels in the plot). North is up and east is to the left.
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