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Table 3
Locations (in milliarcsecond) of the two features NW1 and NW2 for each epoch as measured from SPHERE/IFS data with the procedure described in Sect. 3.4.
| Epoch | Feature NW1 | Feature NW2 |
|---|---|---|
| May 2015 | 401 ± 7 | 550 ± 16 |
| Jun. 2015 | 390 ± 9 | 548 ± 21 |
| Sept. 2015 | 361 ± 7 | 507 ± 16 |
| May 2016 | 314 ± 5 | 465 ± 8 |
| May 2017 | 215 ± 3 | 365 ± 4 |
| Oct. 2017 | 192 ± 21 | 337 ± 18 |
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