Open Access
Table 1
Physical properties of the extreme planetary system HD 196885, the stellar host (Aa), the binary companion (B) and the cir-cumprimary planet (Ab) based on the latest studies from Correia et al. (2008); Fischer et al. (2009); Chauvin et al. (2011); Gaia Collaboration (2021).
| Primary star: HD 196885 Aa | |
|---|---|
| Spectral type | F8V |
| G (mag) | 6.276973 ± 0.002767 |
| V (mag) | 6.385 ± 0.010 |
| H (mag) | 5.190 ± 0.023 |
| Teff (K) | 6340 ± 39 |
| log(ɡ) (dex) | 4.46 ± 0.02 |
| Fe/H (dex) | 0.29 ± 0.05 |
| Distance (pc) | 34.00 ± 0.04 |
| µα (masyr−1) | 71.915 ± 0.032 |
| µδ (masyr−1) | 89.318 ± 0.026 |
| Age (Gyr) | 1.5–3.5 |
| MAa(M⊙) | 1.3 ± 0.1 |
| log(L/L⊙) | 2.4 ± 0.1 |
| Exoplanet: HD 196885 Ab | |
| MAbsin(iAaAb) (MJup) | 2.98 ± 0.05 |
| PAaAb (yr) | 3.63 ± 0.01 |
| eAaAb | 0.48 ± 0.02 |
| ωAaAb (deg) | 93.2 ± 3.0 |
| tP,AaAb | 2002.85 ± 0.02 |
| aAaAb (au) | 2.6 ± 0.1 |
| Binary companion: HD 196885 B | |
| Spectral type | M1 ± 1 |
| KB (mag) | 6.398 ± 250 |
| MB (MΘ) | 0.45 ± 0.01 |
| PAB (yr) | 72.06 ± 4.59 |
| eAB | 0.42 ± 0.03 |
| ωAB (deg) | −118.1 ± 3.1 |
| ΩAB (deg) | 79.8 ± 0.1 |
| iAB (deg) | 116.8 ± 0.7 |
| iP,AB | 1985.59 ± 0.39 |
| a AB (au) | 21.00 ± 0.86 |
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