Table 1
Parameters of HD 189733 and its planet b.
| Parameter | Value | References |
|---|---|---|
| HD 189733 | ||
| mV | 7.65 | 1 |
| MV–MB | 0.93 | 1 |
| Spectral type | K0V + M4V | 1 |
| Teffa | 5052 ± 46 | 2 |
 a |
4.49 ± 0.13 | 2 |
| (M∕H)a | 0.02 ± 0.02 | 2 |
| vrot sin(i)(km s−1) | 3.5 ± 1.0 | 3 |
| Rotation period (d) | 11.953 ± 0.009 | 11 |
| vrad(km s−1) | −2.55 ± 0.21 | 1 |
| Parallaxes (mas) | 50.40 ± 0.22 | 1 |
 |
−4.524⋯−4.458 | 9 |
| age (Gyr) | 5.30 ± 3.80 | 10 |
| Mass (M⊙) | 0.846 ± 0.049 | 6 |
| Radius (R⊙) | 0.805 ± 0.016 | 6 |
| HD 189733 b | ||
| Planet mass [MJup] | 1.144 ± 0.056 | 3 |
| Semi-major axis (AU) | 0.03100 ± 0.00062 | 3 |
| Transit midpoint (MJD) | 53955.0⋯±8.8 × 10−6 | 4 |
| Orbital period (d) | 2.2⋯±7.7 × 10−8 | 4 |
| Planetary radius (RJup) | 1.138 ± 0.027 | 3 |
| Duration of transit (h) | 1.8036 ± 0.0023 | 4 |
| Transit depth (%) | 2.413 ± 0.003 | 8 |
| Planetary density (g cm−3) | 0.963 |
3 |
| Observations | ||
| Epoch of obs. (yr) | 2017.32–2017.88 | |
| Exposure time (s) | ≈700–2500 | |
| S/N at Hα | ≈85 (line core) | |
| No. of spectra | 108 | |
Notes. (a)When several values were listed for a stellar parameter, we averaged all the given values, however discarding outliers.
References. (1) Wenger et al. (2000); (2) Soubiran et al. (2010); (3) Han et al. (2014); (4) Baluev et al. (2015); (5) Gray et al. (2006); (6) Głȩbocki & Gnaciński (2005); (7) Akeson et al. (2013); (8) Morello et al. (2014); (9) Pace (2013); (10) Bonfanti et al. (2016); (11) Henry & Winn (2008).
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