Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 217107 c
Host star HD 217107 • 5138.7 d orbit
Records
8
archive rows
Discovery
2005
Radial Velocity
Radius
—
default parameter set
Mass
1388.9 M⊕
default parameter set
HD 217107
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: Giovinazzi et al. 2025
Host Star
HD 217107
Stable across source rows
Discovery Year
2005
Stable across source rows
Orbital Period
5138.7 day
3150 to 5189
Semi-Major Axis
5.92 au
4.30 to 6.10
Mass
1388.9 Mearth
667.4 to 1434.3
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Refs
8
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5138.7 day | — | 1388.9 Mearth | — | Giovinazzi et al. 2025 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5141 day | — | 1369.8 Mearth | — | Rosenthal et al. 2021 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5178 day | — | 1423.9 Mearth | — | Bryan et al. 2016 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4270 day | — | 826.3 Mearth | — | Wright et al. 2009 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5164.6 day | — | 1430.2 Mearth | — | An et al. 2025 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 3150 day | — | 667.4 Mearth | — | Vogt et al. 2005 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5189 day | — | 1434.3 Mearth | — | Feng et al. 2015 |
| 2005 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 3352 day | — | 794.5 Mearth | — | Wittenmyer et al. 2007 |