Table A.1.
Relative astrometric positions and flux ratios determined from the Brγ region of GRAVITY data.
| Date | HJDmean | Baselines | ρ | PA | ΔRA | ΔDec | σ-a | σ-b | σ-PA | fpre − sd, tot |
|---|---|---|---|---|---|---|---|---|---|---|
| -2400000 | [mas] | [°] | [mas] | [mas] | [mas] | [mas] | [°] | |||
| 2021 Sep 05 | 59463.625 | A0-G1-J2-J3 | 1.066 | 57.202 | 0.896 | 0.577 | 0.017 | 0.011 | 101.5 | 0.481±0.021 |
| 2021 Sep 18 | 59476.538 | D0-G2-J3-K0 | 1.072 | 192.472 | -0.231 | -1.047 | 0.048 | 0.028 | 162.0 | 0.540±0.028 |
| 2022 May 06 | 59706.711 | A0-G1-J2-J3 | 1.102 | 71.504 | 1.045 | 0.350 | 0.015 | 0.007 | 122.8 | 0.468±0.011 |
| 2023 Apr 23 | 60058.760 | A0-G1-J2-K0 | 1.134 | 350.192 | -0.193 | 1.117 | 0.049 | 0.014 | 127.0 | 0.429±0.015 |
| 2023 May 01 | 60066.747 | A0-G1-J2-K0 | 1.269 | 48.653 | 0.953 | 0.838 | 0.033 | 0.009 | 131.3 | 0.445±0.002 |
| 2023 May 20 | 60085.861 | A0-G1-J2-K0 | 1.245 | 223.548 | -0.858 | -0.902 | 0.024 | 0.011 | 5.0 | 0.429±0.006 |
| 2023 Jun 20 | 60116.635 | A0-G2-J2-J3 | 1.077 | 147.109 | 0.585 | -0.904 | 0.054 | 0.015 | 119.5 | 0.376±0.018 |
| 2023 Jul 17 | 60143.570 | A0-G1-J2-K0 | 1.307 | 18.601 | 0.417 | 1.239 | 0.014 | 0.007 | 137.5 | 0.442±0.003 |
| 2023 Aug 16 | 60173.624 | A0-G2-J2-J3 | 1.017 | 289.855 | -0.957 | 0.345 | 0.010 | 0.004 | 13.2 | 0.411±0.007 |
| 2023 Aug 20 | 60177.572 | A0-G1-J2-K0 | 1.138 | 330.386 | -0.562 | 0.989 | 0.044 | 0.011 | 8.7 | 0.447±0.014 |
| 2023 Sep 07 | 60195.505 | A0-G1-J2-K0 | 0.961 | 123.769 | 0.798 | -0.534 | 0.027 | 0.006 | 0.1 | 0.423±0.005 |
| 2023 Sep 08 | 60196.598 | A0-G1-J2-K0 | 0.992 | 137.460 | 0.670 | -0.731 | 0.051 | 0.009 | 30.5 | 0.400±0.013 |
Notes. ρ is the angular separation between the components, PA is the position angle (from north to east), ΔRA and ΔDec are the companion coordinates relative to the primary in the east and north direction, respectively, σ-a and σ-b are the major and minor axes of the error ellipse, respectively, σ-PA is the position angle of the error ellipse (from north to east), and fpre − sd, tot is the total flux fraction of the pre-sd star. a The |V| observable had to be discarded from this dataset due to a miscalibration issue (|V|> 1.0).
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