Discovery Method
Transit
Consistent across records
←Back to Exoplanets
ExoplanetDetail
GJ 9827 d
Host star GJ 9827 • 1.98 R⊕ • 6.20 d orbit
Records
8
archive rows
Discovery
2017
Transit
Radius
1.98 R⊕
default parameter set
Mass
3.02 M⊕
default parameter set
GJ 9827
675 K equilibrium
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: Piaulet-Ghorayeb et al. 2024
Host Star
GJ 9827
Stable across source rows
Discovery Year
2017
Stable across source rows
Orbital Period
6.20 day
6.20 to 6.20
Semi-Major Axis
0.05 au
0.05 to 0.06
Radius
1.98 Rearth
1.89 to 2.10
Mass
3.02 Mearth
2.35 to 5.20
Equilibrium Temperature
675 K
599.7 to 681
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 1.98 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
GJ 9827 d
1.98 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Refs
8
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 2.02 Rearth | 4.04 Mearth | — | Rice et al. 2019 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 2.02 Rearth | 3.53 Mearth | 681 K | Bonomo et al. 2023 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 1.98 Rearth | 3.02 Mearth | 675 K | Piaulet-Ghorayeb et al. 2024 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 1.96 Rearth | 3.42 Mearth | 612 K | Howard et al. 2025 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 2.10 Rearth | — | 604.9 K | Niraula et al. 2017 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 2.07 Rearth | 5.20 Mearth | 680 K | Rodriguez et al. 2018 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 2.04 Rearth | 2.35 Mearth | 646 K | Prieto-Arranz et al. 2018 |
| 2017 | Transit | K2 | 0.95 m Kepler Telescope | 6.20 day | 1.89 Rearth | 3.02 Mearth | 599.7 K | Passegger et al. 2024 |