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Table 1
Stellar and planetary parameters for Proxima Cen and Proxima Cen b.
| Parameter | Unit | Value | Ref. |
|---|---|---|---|
| Stellar mass | M⊙ | 0.12 ± 0.015 | 1 |
| Stellar radius | R⊙ | 0.141 ± 0.021 | 1 |
| Spectral type | M5.5V | 1 | |
| Stellar rotation period | d | 82.5 | 2 |
| Average stellar magnetic field | G | 600 | 3 |
| Inclination of the system | ° | ~45 | 4 |
| Planetary orbital separation | au | 0.0485 ± 0.0051 | 1 |
| Orbital period | d | 11.2 | 1 |
| Eccentricity | 0.17; <0.35 | 5; 1 | |
| Minimum planetary mass | M⊕ | 1.27 | 1 |
| Equilibrium black body temperature | K | ~234 | 1 |
| Age | Gyr | ~5; 7–8 | 6; 7 |
References. 1: Anglada-Escudé et al. (2016), 2: Kiraga & Stepien (2007), 3: Reiners & Basri (2008), 4: Anglada et al. (2017), 5: Damasso et al. (2020), 6: Bazot et al. (2016), 7: Beech et al. (2017).
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