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Table A.1.
Best-fit orbit parameters with and without Schwarzschild precession.
| Parameter | Without Schwarzschild precession | With Schwarzschild precession | Unit |
|---|---|---|---|
| f | 0.901 ± 0.090 | 0.945 ± 0.090 | |
| M• | 4.106 ± 0.034 | 4.100 ± 0.034 | 106M⊙ |
| R0 | 8127 ± 31 | 8122 ± 31 | pc |
| a | 125.38 ± 0.18 | 125.40 ± 0.18 | mas |
| e | 0.88473 ± 0.00018 | 0.88466 ± 0.00018 | |
| i | 133.817 ± 0.093 | 133.818 ± 0.093 | ° |
| ω | 66.12 ± 0.12 | 66.13 ± 0.12 | ° |
| Ω | 227.82 ± 0.19 | 227.85 ± 0.19 | ° |
| P | 16.0526 | 16.0518 | yr |
| tperi | 2018.37965 ± 0.00015 | 2018.37974 ± 0.00015 | yr |
| 58257.667 ± 0.054 | 58257.698 ± 0.054 | MJD | |
| x0 | −0.88 ± 0.47 | −1.00 ± 0.47 | mas |
| y0 | −0.97 ± 0.41 | −0.99 ± 0.41 | mas |
| ẋ0 | 0.070 ± 0.031 | 0.076 ± 0.031 | mas yr−1 |
| ẏ0 | 0.178 ± 0.030 | 0.178 ± 0.030 | mas yr−1 |
| ż0 | 2.4 ± 3.0 | 1.9 ± 3.0 | km s−1 |
|
0.86 | 0.86 |
Notes. For the case of Schwarzschild precession, the orbital parameters should be interpreted as the osculating orbital parameters. The argument of periapsis ω and the time of pericentre passage tperi are given for the epoch of last apocenter in 2010.
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