Table 2
Companion position measurements for the outer Algol system (C relative to A+B) converted into angular separation and position angle.
| ρ (mas) | θ (°) | ||||||
| Date | JD (2 400 000+) | Estimated | Predicted | Ratio | Estimated | Predicted | Difference |
|
|
|||||||
| 2011-10-16 | 55851.9 | 87.9 ± 9.8 | 78.0 ± 0.2 | 0.888 ± 0.099 | 218.1 ± 7.3 | 134.4 ± 0.1 | −83.7 ± 7.3 |
| 2011-10-19 | 55854.9 | 77.6 ± 1.1 | 77.8 ± 0.2 | 1.002 ± 0.014 | 215.5 ± 0.7 | 134.7 ± 0.1 | −80.9 ± 0.7 |
|
|
|||||||
| 2012-07-29 | 56139.0 | 84.4 ± 1.4 | 88.0 ± 0.5 | 1.043 ± 0.019 | 13.4 ± 1.4 | 307.4 ± 0.1 | −66.0 ± 1.4 |
|
|
|||||||
| 2012-12-19 | 56281.7 | 89.0 ± 5.6 | 94.0 ± 0.4 | 1.056 ± 0.067 | 13.4 ± 4.1 | 314.5 ± 0.1 | −58.9 ± 4.1 |
| 2012-12-20 | 56282.8 | 94.6 ± 6.7 | 93.6 ± 0.4 | 0.989 ± 0.070 | 15.5 ± 5.4 | 314.5 ± 0.1 | −60.9 ± 5.4 |
Notes.The ratio between the measured and theoretical angular separations give an estimate of the corrective scaling factor. The differences in position angle indicate the rotation of the segmented mirror reference frame relative to the northeast orientation. Horizontal lines separate the three observing runs considered here. Correction factors are assumed to be constant within a given observing run.
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