Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 177830 b
Host star HD 177830 • 410.1 d orbit
Records
4
archive rows
Discovery
1999
Radial Velocity
Radius
—
default parameter set
Mass
537.1 M⊕
default parameter set
HD 177830
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: Stassun et al. 2017
Host Star
HD 177830
Stable across source rows
Discovery Year
1999
Stable across source rows
Orbital Period
410.1 day
406.6 to 410.1
Semi-Major Axis
1.14 au
1.14 to 1.23
Mass
537.1 Mearth
428.4 to 537.1
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Refs
4
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 1999 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 410.1 day | — | 537.1 Mearth | — | Stassun et al. 2017 |
| 1999 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 407.4 day | — | 428.4 Mearth | — | Rosenthal et al. 2021 |
| 1999 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 406.6 day | — | 473.5 Mearth | — | Meschiari et al. 2011 |
| 1999 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 410.1 day | — | 486.3 Mearth | — | Butler et al. 2006 |