Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 128311 c
Host star HD 128311 • 921.5 d orbit
Records
5
archive rows
Discovery
2005
Radial Velocity
Radius
—
default parameter set
Mass
1204.3 M⊕
default parameter set
HD 128311
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: McArthur et al. 2014
Host Star
HD 128311
Stable across source rows
Discovery Year
2005
Stable across source rows
Orbital Period
921.5 day
910.7 to 928.3
Semi-Major Axis
1.74 au
1.74 to 1.76
Mass
1204.3 Mearth
1017.0 to 1204.3
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Refs
5
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 921.5 day | — | 1204.3 Mearth | — | McArthur et al. 2014 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 917.5 day | — | 1032.9 Mearth | — | Rosenthal et al. 2021 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 928.3 day | — | 1020.2 Mearth | — | Vogt et al. 2005 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 923.8 day | — | 1029.7 Mearth | — | Wittenmyer et al. 2009 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 910.7 day | — | 1017.0 Mearth | — | Rein 2015 |