Discovery Method
Transit
Consistent across records
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ExoplanetDetail
K2-99 b
Host star K2-99 • 11.88 R⊕ • 18.25 d orbit
Records
8
archive rows
Discovery
2016
Transit
Radius
11.88 R⊕
default parameter set
Mass
276.5 M⊕
default parameter set
K2-99
1184 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: Smith et al. 2022
Host Star
K2-99
Stable across source rows
Discovery Year
2016
Stable across source rows
Orbital Period
18.25 day
18.25 to 18.25
Semi-Major Axis
0.15 au
0.15 to 0.16
Radius
11.88 Rearth
8.30 to 14.46
Mass
276.5 Mearth
276.5 to 308.3
Equilibrium Temperature
1184 K
1108 to 1184
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 11.88 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
K2-99 b
11.88 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 |
|---|---|---|---|---|---|---|---|---|
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 12.48 Rearth | — | — | Kruse et al. 2019 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 8.30 Rearth | — | — | Petigura et al. 2018 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | — | — | — | Pope et al. 2016 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 10.54 Rearth | — | — | Mayo et al. 2018 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 11.73 Rearth | — | 1113 K | Livingston et al. 2018 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 11.88 Rearth | 276.5 Mearth | 1184 K | Smith et al. 2022 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 12.37 Rearth | 287 Mearth | 1108 K | Howard et al. 2025 |
| 2016 | Transit | K2 | 0.95 m Kepler Telescope | 18.25 day | 14.46 Rearth | 308.3 Mearth | — | Smith et al. 2017 |