Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
Proxima Cen b
Host star Proxima Cen • 11.18 d orbit
Records
5
archive rows
Discovery
2016
Radial Velocity
Radius
—
default parameter set
Mass
1.05 M⊕
default parameter set
Proxima Cen
218 K equilibrium
Canonical Summary
Adopted planet values from the default parameter set
Values come from the archive's default parameter set. Missing values stay missing. Ranges and counts describe all source rows.
Selected source: Suárez Mascareño et al. 2025
Host Star
Proxima Cen
Stable across source rows
Discovery Year
2016
Stable across source rows
Orbital Period
11.18 day
11.18 to 11.19
Semi-Major Axis
0.05 au
0.05 to 0.05
Mass
1.05 Mearth
1 to 1.27
Equilibrium Temperature
218 K
216 to 234
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Refs
5
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2016 | Radial Velocity | European Southern Observatory | Multiple Telescopes | 11.19 day | — | — | — | Jenkins et al. 2019 |
| 2016 | Radial Velocity | European Southern Observatory | Multiple Telescopes | 11.19 day | — | 1.07 Mearth | — | Faria et al. 2022 |
| 2016 | Radial Velocity | European Southern Observatory | Multiple Telescopes | 11.19 day | — | 1.27 Mearth | 234 K | Anglada-Escudé et al. 2016 |
| 2016 | Radial Velocity | European Southern Observatory | Multiple Telescopes | 11.19 day | — | 1 Mearth | 216 K | Damasso et al. 2020 |
| 2016 | Radial Velocity | European Southern Observatory | Multiple Telescopes | 11.18 day | — | 1.05 Mearth | 218 K | Suárez Mascareño et al. 2025 |