Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 4203 b
Host star HD 4203 • 431.9 d orbit
Records
5
archive rows
Discovery
2001
Radial Velocity
Radius
—
default parameter set
Mass
708.8 M⊕
default parameter set
HD 4203
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 4203
Stable across source rows
Discovery Year
2001
Stable across source rows
Orbital Period
431.9 day
406 to 437.2
Semi-Major Axis
1.17 au
1.10 to 1.18
Mass
708.8 Mearth
508.5 to 708.8
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 |
|---|---|---|---|---|---|---|---|---|
| 2001 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 431.9 day | — | 708.8 Mearth | — | Stassun et al. 2017 |
| 2001 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 437.2 day | — | 579.1 Mearth | — | Rosenthal et al. 2021 |
| 2001 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 406 day | — | 508.5 Mearth | — | Vogt et al. 2002 |
| 2001 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 431.9 day | — | 657.9 Mearth | — | Butler et al. 2006 |
| 2001 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 437.1 day | — | 578.4 Mearth | — | Kane et al. 2014 |