Open Access

Fig. 6.


Change of on-sky position for both S62 and S29 in RA (left panel) and Dec (right panel) vs. time as observed by GRAVITY and from previous VLT NACO measurements. In each panel, measurements for S62 are shown in blue, and measurements for S29 are shown in black. New measurements from GRAVITY are shown in stars (imaging) and filled circles (dual-beam astrometry), while previous NACO measurements are shown by crosses. The solid lines for S29 show the best-fit orbit. While the S62 data is still insufficient to constrain any orbital parameters, we show a linear fit to the GRAVITY data. The two insets show the zoom-in view of the GRAVITY data points in 2019 for S62 and S29, respectively.

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