Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
HD 13931 b
Host star HD 13931 • 4218 d orbit
Records
5
archive rows
Discovery
2009
Radial Velocity
Radius
—
default parameter set
Mass
699.2 M⊕
default parameter set
HD 13931
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 13931
Stable across source rows
Discovery Year
2009
Stable across source rows
Orbital Period
4218 day
4218 to 4460
Semi-Major Axis
5.15 au
5.15 to 5.34
Mass
699.2 Mearth
597 to 889.9
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 |
|---|---|---|---|---|---|---|---|---|
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 4218 day | — | 597 Mearth | — | Howard et al. 2010 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 4449 day | — | 889.9 Mearth | — | Xiao et al. 2023 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 4460 day | — | 610.2 Mearth | — | Bryan et al. 2016 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 4218 day | — | 699.2 Mearth | — | Stassun et al. 2017 |
| 2009 | Radial Velocity | W. M. Keck Observatory | 10 m Keck I Telescope | 4449 day | — | 607.4 Mearth | — | Rosenthal et al. 2021 |