Open Access
Table 1
Parameters of HD 209458 b and its star.
| Parameter | Value | References | |
|---|---|---|---|
| Host star: | |||
| Spectral type | G0 V | 1 | |
| M* (kg) | 2.45 ± 0.18 ×1030 | (1.23 M⊙) | 2 |
| R* (Gm) | 0.83 ± 0.01 | (1.19 R⊙) | 2 |
| T*,eff (K) | 6091 ± 10 | 2 | |
| g* (m s−2) | 282 ± 13 | (4.45 [cm s−2]) | 2 |
| [Fe/H] | 0.01 | 2 | |
| t* (Gyr) | ![$\[3.10_{-0.70}^{+0.80}\]$](/articles/aa/full_html/2024/10/aa50767-24/aa50767-24-eq3.png){kind=small} |
3 | |
| Vsys (km s−2) | −14.741 ± 0.002 | 4 | |
| RA/Dec (J2000, epoch 2015.5) | 330.795022° 18.884242° | (22:03:10.81 +18:53:03.27) | 5 |
| Planet: | |||
| ap (Gm) | 7.29 ± 0.15 | (0.0488 au) | 2 |
| e | 0.0 | 2 | |
| ip (degree) | 86.71 ± 0.05 | 2 | |
| Mp (kg) | 1.39 ± 0.02 × 1027 | (0.73 MJ) | 2 |
| Rp (km) | 99 500 ± 1300 | (1.39 RJ) | 2 |
| gp (m s−2) | 9.36 ± 0.58 | (2.97 [cm s−2]) | Derived |
| Teq (K) | 1451 ± 20 | Derived | |
| Tp,int (K) | ≈550 | 6 (model) | |
| P (day) | 3.5247404585539 ± 0.000015326508 | 5 | |
| T14 (s) | 11 002.198566627 ± 1.324210291 | 5 | |
| Mid-transit times: | |||
| T0,1 (BJDTDB, day) | 2 459 759.810949 ± 0.000298 | Derived | |
| T0,2 (BJDTDB, day) | 2459 766.860430 ± 0.000268 | Derived | |
| T0,3 (BJDTDB, day) | 2459 865.553163 ± 0.000181 | Derived | |
| T0,4 (BJDTDB, day) | 2460 122.859217 ± 0.001289 | Derived |
Notes. (1) del Burgo & Allende Prieto (2016); (2) Stassun et al. (2017); (3) Bonomo et al. (2017); (4) Naef et al. (2004); (5) ExoFOP website (2024); (6) Thorngren et al. (2020). Some parameters were acquired from the Nasa Exoplanet Archive (2024).
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