Left panel: trajectory of α Cen A relative to S2 (orange curve) on the NACO image obtained on 27 March 2016. The uncertainty on the impact parameter is represented with blue segments crossing at S2’s position. Right panel: photometry of S2 (red dots) compared to a Kurucz model with θLD = 0.025 mas and Teff = 8000 K (blue curve) reddened with E(B−V) = 1.0 (green curve).
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