Discovery Method
Transit
Consistent across records
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ExoplanetDetail
Kepler-221 d
Host star Kepler-221 • 2.73 R⊕ • 10.04 d orbit
Records
13
archive rows
Discovery
2014
Transit
Radius
2.73 R⊕
default parameter set
Mass
—
default parameter set
Kepler-221
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: Rowe et al. 2014
Host Star
Kepler-221
Stable across source rows
Discovery Year
2014
Stable across source rows
Orbital Period
10.04 day
10.04 to 10.04
Semi-Major Axis
0.09 au
0.08 to 0.09
Radius
2.73 Rearth
2.52 to 2.97
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 2.73 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
Kepler-221 d
2.73 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Refs
13
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.52 Rearth | — | 706 K | Q1-Q12 KOI Table |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | — | 3.61 Mearth | — | Ofir et al. 2025 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | — | — | — | Holczer et al. 2016 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | — | — | — | Gajdoš et al. 2019 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.73 Rearth | — | — | Rowe et al. 2014 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.52 Rearth | — | 706 K | Q1-Q17 DR24 KOI Table |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.78 Rearth | — | — | Morton et al. 2016 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.52 Rearth | — | 706 K | Q1-Q16 KOI Table |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | — | — | — | Q1-Q17 DR25 Supplemental KOI Table |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.97 Rearth | — | 712 K | Q1-Q17 DR25 KOI Table |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.57 Rearth | — | — | Fulton & Petigura 2018 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | — | 2.83 Rearth | — | — | Berger et al. 2018 |
| 2014 | Transit | Kepler | 0.95 m Kepler Telescope | 10.04 day | 2.81 Rearth | — | 723 K | Q1-Q8 KOI Table |