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Fig. 3

image

Temporal evolution of the relative right ascension (top left), relative declination (top right), separation (bottom left) and declination (bottom right) of 51 Eridani b. With respect to Fig. 2, the GPI astrometry is recalibrated by adding a position angle offset of 1.0° (see text). In the top panels, second-order polynomial fits on the SPHERE and GPI data points are also indicated to highlight the curvature in the planet motion (purple curves). The bottom-right panel shows a linear fit to the SPHERE data (purple line). The data point in light gray was not considered for the acceleration analysis and the orbital fits (see text).

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