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Table 1
Properties of the star τ Boo (upper part) and τ Boo b (lower part).
| Parameter | Symbol | Value |
|---|---|---|
| Distance (pc)(a) | d | 15.66 ± 0.08 |
| Effective temperature (K)(b) | Teff | 6399 ± 45 |
Luminosity  |
L* | 3.06 ± 0.16 |
Mass  |
M* | 1.38 ± 0.05 |
Radius  |
R* | 1.42 ± 0.08 |
| Surface gravity (cgs)(c) | logg |  |
| Systemic velocity (km s−1)(d) | γ | − 16.4 ± 0.1 |
| Rotation velocity Systemic velocity (km s−1)(b) | vsin(i) | 14.27 ± 0.06 |
| Semiamplitude Systemic velocity (m s−1)(e) | K* | 468.42 ± 2.9 |
| Metallicity Systemic velocity (dex)(b) | [M/H] | 0.26 ± 0.03 |
| Age (Gyr)(b) | 0.9 ± 0.5 | |
| Orbital period (days)(e) | P | 3.312454 ± 3.3 ⋅ 10−6 |
| Semimajor axis (AU)(b) | a | 0.049 ± 0.003 |
| Orbital inclination (deg)(d) | i | 44.5 ± 1.5 |
| Eccentricity(b) | e | 0.011 ± 0.006 |
Mass  |
Mp | 6.13 ± 0.17 |
| Phase zero-point (HJD)(e) | T0 | 56401.8797 ± 0.0036 |
| Semiamplitude Systemic velocity (km s−1)(d) | KP | 110.0 ± 3.2 |
References. (a) Gaia Collaboration (2018); (b) Borsa et al. (2015); (c) Takeda et al. (2007); (d) Brogi et al. (2012); (e) Justesen & Albrecht (2019).
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