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Table 2.
Orbital parameters for the HD 98800 AB system.
| Fitted parameters | SZF21 | Solution I | Solution II |
|---|---|---|---|
| Period (yr) | 230 ± 20 | 212 ± 11 | 237 ± 12 |
| T0 (yr) | 2023 ± 1 | 2024.11 ± 0.79 | 2021.63 ± 0.65 |
| e | 0.46 ± 0.02 | 0.437 ± 0.014 | 0.460 ± 0.015 |
| ωA (°) | 65 ± 5 | 69.1 ± 3.5 | 58.8 ± 2.6 |
| Ω (°) | 184.5 ± 0.1 | 184.47 ± 0.10 | 184.639 ± 0.095 |
| i (°) | 88.1 ± 0.1 | 87.850 ± 0.082 | 88.074 ± 0.064 |
| γAB (km s−1) | 8.7 ± 0.7 | 9.15 ± 0.20 | 9.16 ± 0.22 |
| MAaAb (M⊙) | 1.1 ± 0.3 | 1.262 ± 0.075 | 1.280 ± 0.085 |
| MBaBb (M⊙) | 1.4 ± 0.3 | 1.306 ± 0.085 | 1.315 ± 0.086 |
| π (mas) | 22.2 ± 0.5 | 21.89 ± 0.31 | 22.27 ± 0.28 |
| Derived parameters | |||
| KAaAb (km s−1) | 4.2 ± 0.8 | 3.86 ± 0.23 | 3.78 ± 0.20 |
| KBaBb (km s−1) | 3.2 ± 0.8 | 3.73 ± 0.20 | 3.67 ± 0.20 |
| a (″) | 1.13 ± 0.08 | 1.067 ± 0.046 | 1.172 ± 0.044 |
| a (au) | 51 ± 3 | 48.8 ± 1.9 | 52.6 ± 2.0 |
| d (pc) | 45 ± 1 | 45.68 ± 0.70 | 44.91 ± 0.57 |
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