Table 4
Orbital and best-fit parameters.
| Date | φ | Δα | Δδ | PAbin | PAB | FR | ΘHα | ΘHα | ρ Hα | ρ Hα |
| (mas) | (mas) | (°) | (°) | (mas) | (AU) | (mas) | (AU) | |||
|
|
||||||||||
| 2008-07-29 | –0.012 | –1.372 | –9.387 | –171.7 | –31.0 |
|
1.91 ± 0.13 | 0.61 ± 0.04 | –0.10 ± 0.03 | –0.03 ± 0.01 |
| 2008-08-07 | –0.006 | –1.712 | –8.891 | –169.1 | –28.0 |
|
1.65 ± 0.33 | 0.53 ± 0.11 | –0.19 ± 0.03 | –0.06 ± 0.03 |
| 2009-08-26 | 0.262 | –3.558 | 16.961 | –11.8 | –31.0 |
|
0.67 ± 0.20 | 0.22 ± 0.06 | –0.03 ± 0.04 | –0.01 ± 0.01 |
| 2010-08-01 | 0.499 | 3.766 | 15.567 | 13.6 | 0.9 |
|
1.41 ± 0.17 | 0.45 ± 0.05 | 0.0 ± 0.10 | 0.0 ± 0.03 |
| 2011-08-28 | 0.773 | 7.066 | –4.305 | 121.3 | –44.0 |
|
1.95 ± 0.20 | 0.62 ± 0.06 | 0.4 ± 0.04 | 0.0 ± 0.04 |
| 2011-10-16 | 0.806 | 6.510 | –6.927 | 136.8 | –36.0 |
|
1.85 ± 0.20 | 0.59 ± 0.06 | –0.32 ± 0.30 | –0.10 ± 0.10 |
Notes.φ is the orbital phase, (Δα, Δδ) the angular separation, PAbin the position angle of the SB at the date of the interferometric observations. PAB is the baseline position angle, FR the binary flux ratio in the continuum, ΘHα and ρHα the Hα FWHM and displacements resulting from the best fit of a face-on Gaussian model, in mas and AU at 320 pc. The displacements are counted positive towards the secondary.
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