Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
GJ 3998 c
Host star GJ 3998 • 13.73 d orbit
Records
2
archive rows
Discovery
2016
Radial Velocity
Radius
—
default parameter set
Mass
6.82 M⊕
default parameter set
GJ 3998
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: Stefanov et al. 2025
Host Star
GJ 3998
Stable across source rows
Discovery Year
2016
Stable across source rows
Orbital Period
13.73 day
13.73 to 13.74
Semi-Major Axis
0.09 au
0.09 to 0.09
Mass
6.82 Mearth
6.26 to 6.82
Provenance
Underlying measurements and references
Evidence Summary
Rows
2
Refs
2
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2016 | Radial Velocity | Roque de los Muchachos Observatory | 3.58 m Telescopio Nazionale Galileo | 13.73 day | — | 6.82 Mearth | — | Stefanov et al. 2025 |
| 2016 | Radial Velocity | Roque de los Muchachos Observatory | 3.58 m Telescopio Nazionale Galileo | 13.74 day | — | 6.26 Mearth | — | Affer et al. 2016 |