Table 6
Comparison of the DR3 astrometric and SB9 spectroscopic orbits for HIP 31205, 39198, 57791, and 91751.
| HIP | 31205 | 39198 | 57791 | 91751 | |
|---|---|---|---|---|---|
| a (mas) | 2.87 ± 0.05 | 5.7 ± 0.1 | 6.6 ± 0.2 | 6.39 ± 0.15 | |
| i (º) | 75.1 ± 1.8 | 123.2 ± 0.6 | 73.7 ± 0.6 | 61.9 ± 0.9 | |
| ω1 (º) | DR3 | –23.1 ± 56.1 | 103.2 ± 2.6 | 134.1 ± 12.7 | 63.9 ± 8.5 |
| SB9 | 73.7 ± 32.1 | 108.1 ± 3.2 | 126.4 ± 1.3 | 75.50 ± 0.16 | |
| Ω1 (º) | DR3 | 134.8 ± 1.8 | 246.8 ± 1.9 | 108.2 ± 0.5 | –77.5 ± 0.9 |
| e | DR3 | 0.052 ± 0.054 | 0.48 ± 0.02 | 0.21 ± 0.02 | 0.28 ± 0.04 |
| SB9 | 0.013 ± 0.008 | 0.52 ± 0.02 | 0.272 ± 0.006 | 0.2019 ± 0.0006 | |
| P (d) | DR3 | 464.8 ± 5.4 | 364.7 ± 0.6 | 488.2 ± 2.2 | 481.6 ± 2.1 |
| SB9 | 457.40 ± 0.14 | 365.4 ± 0.6 | 490.77 ± 0.09 | 485.21 ± 0.02 | |
| T0 (JD–2400 000) | DR3 | 57 374.4 ± 80.6 | 57 482.3 ± 1.5 | 57 564± 16 | 57463.6 ± 9.1 |
| SB9 | 57 282.9 ± 43.6 | 57480.9 ± 7.3 | 57 556.9 ± 2.7 | 57480.7 ± 9.2 | |
| SB9 | 47 677.5 ± 40.7 | 53 826.9 ± 1.3 | 51 667.7 ± 1.6 | 54 084.27 ± 0.19 | |
| M1 (M⊙) | (FLAME) |  |
|||
| M2 (M⊙) |  |
Notes. The orbits listed here do not result from a simultaneous adjustment (SB9 + DR3) since the epoch DR3 astrometry was not yet made public by Gaia DR3. To allow an easy comparison between the spectroscopic SB9 orbital solution and the Gaia DR3 astrometric solution, the value of ω in this table corresponds to the spectroscopic value (component 1 with respect to the centre of mass). Hence all DR3 ω values have been shifted by 180º with respect to the value given in the DR3 catalogue. The first line of T0 values labelled SB9 corresponds to the original value shifted in time to match the DR3 epoch, whereas the second T0 line labelled SB9 lists the original T0 value from SB9.
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