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Table 3
Relative astrometry of HD 196885 B relative to A extracted from NaCo (see Chauvin et al. 2011), SOAR, IRDIS, and GRAVITY (refered as GRAV. in the table) observations.
| Inst. | MJD | Δα (mas) | Δδ (mas) | σΔα (mas) | σΔα (mas) | ρ |
|---|---|---|---|---|---|---|
| SOAR | 51826.186 | 650.0 | 135.8 | 5.0 | 5.0 | |
| SOAR | 52459.690 | 709.7 | 143.1 | 5.0 | 5.0 | |
| NaCo | 53583.238 | 658.5 | 273.6 | 1.7 | 1.6 | |
| NaCo | 53974.086 | 649.8 | 292.6 | 1.9 | 2.4 | |
| NaCo | 54337.053 | 640.2 | 309.7 | 3.1 | 3.2 | |
| NaCo | 54645.259 | 630.9 | 326.3 | 3.1 | 3.2 | |
| NaCo | 55070.108 | 614.5 | 342.1 | 3.0 | 2.9 | |
| IRDIS | 57178.378 | 497.0 | 405.0 | 2.0 | 2.0 | |
| SOAR | 57291.493 | 491.0 | 407.7 | 3.0 | 3.0 | |
| IRDIS | 58026.077 | 433.0 | 422.0 | 2.0 | 2.0 | |
| SOAR | 58265.219 | 417.8 | 420.7 | 3.0 | 3.0 | |
| SOAR | 58680.881 | 383.1 | 420.1 | 3.0 | 3.0 | |
| GRAV. | 58710.188 | 377.115 | 425.575 | 0.017 | 0.037 | −0.61 |
| GRAV. | 59363.331 | 320.243 | 428.407 | 0.015 | 0.043 | −0.74 |
| GRAV. | 59450.195 | 312.573 | 428.333 | 0.034 | 0.049 | −0.96 |
| SOAR | 59489.151 | 385.2 | 3.0 | 3.0 | 3.0 | |
| GRAV. | 59507.082 | 307.471 | 428.540 | 0.038 | 0.037 | −0.65 |
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