Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 99109 b
Host star HD 99109 • 439.3 d orbit
Records
3
archive rows
Discovery
2005
Radial Velocity
Radius
—
default parameter set
Mass
139.8 M⊕
default parameter set
HD 99109
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 99109
Stable across source rows
Discovery Year
2005
Stable across source rows
Orbital Period
439.3 day
439.3 to 441
Semi-Major Axis
1.11 au
1.10 to 1.12
Mass
139.8 Mearth
139.8 to 159.5
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Refs
3
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 | 439.3 day | — | 159.5 Mearth | — | Butler et al. 2006 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 439.3 day | — | 139.8 Mearth | — | Stassun et al. 2017 |
| 2005 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 441 day | — | 150.7 Mearth | — | Rosenthal et al. 2021 |