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Table 1.
Observational parameters of Proxima Centauri and Proxima c.
| Quantity | Value | Ref. | |
|---|---|---|---|
| Mass of Proxima | m⋆ | 0.1221 ± 0.0022 M⊙ | M15 |
| Parallax | ϖ | 768.529 ± 0.220 mas | GDR2 |
| RV amplitude of Proxima | Kc | 1.2 ± 0.4 m s−1 | D20 |
| Orbital period | Porb |
 days |
D20 |
| Inferior conjunction BJD | Tc, conj |
 |
D20 |
| Eccentricity | e | 0 | Fixed |
| GDR2 PM anomaly | ΔμG2 | Δμα = +0.218 ± 0.112 mas a−1 | K19 |
| Δμδ = +0.384 ± 0.215 mas a−1 | K19 | ||
| ρ(Δμα, Δμδ) = 0.37 | GDR2 |
References. D20: Damasso et al. (2020); GDR2: Gaia Collaboration (2018); K19: Kervella et al. (2019a); M15: Mann et al. (2015).
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