Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
GJ 229 A c
Host star GJ 229 • 121.9 d orbit
Records
2
archive rows
Discovery
2020
Radial Velocity
Radius
—
default parameter set
Mass
8.58 M⊕
default parameter set
GJ 229
temperature unconstrained
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: Feng et al. 2022
Host Star
GJ 229
Stable across source rows
Discovery Year
2020
Stable across source rows
Orbital Period
121.9 day
121.9 to 122.0
Semi-Major Axis
0.38 au
0.34 to 0.38
Mass
8.58 Mearth
7.27 to 8.58
Provenance
Underlying measurements and references
Evidence Summary
Rows
2
Refs
2
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2020 | Radial Velocity | Multiple Facilities | Multiple Telescopes | 121.9 day | — | 8.58 Mearth | — | Feng et al. 2022 |
| 2020 | Radial Velocity | Multiple Facilities | Multiple Telescopes | 122.0 day | — | 7.27 Mearth | — | Feng et al. 2020 |