Discovery Method
Transit
Consistent across records
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ExoplanetDetail
Kepler-51 c
Host star Kepler-51 • 9 R⊕ • 85.31 d orbit
Records
18
archive rows
Discovery
2012
Transit
Radius
9 R⊕
default parameter set
Mass
4 M⊕
default parameter set
Kepler-51
439 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: Masuda 2014
Host Star
Kepler-51
Stable across source rows
Discovery Year
2012
Stable across source rows
Orbital Period
85.31 day
85.31 to 85.32
Semi-Major Axis
0.38 au
0.37 to 0.39
Radius
9 Rearth
5.03 to 9.31
Mass
4 Mearth
3.73 to 9.70
Density
0.03 g/cm**3
0.03 to 0.15
Equilibrium Temperature
439 K
415 to 439
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 9 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
Kepler-51 c
9 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
18
Refs
17
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 5.71 Rearth | — | — | Steffen et al. 2013 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 9 Rearth | 4 Mearth | 439 K | Masuda 2014 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 9.31 Rearth | 9.70 Mearth | — | Hadden et al. 2014 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.75 Rearth | — | — | Morton et al. 2016 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 5.90 Rearth | — | 415 K | Q1-Q8 KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.10 Rearth | — | 423 K | Q1-Q17 DR24 KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.10 Rearth | — | 423 K | Q1-Q12 KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.10 Rearth | — | 423 K | Q1-Q16 KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | — | — | — | Q1-Q17 DR25 Supplemental KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 6.40 Rearth | 6.09 Mearth | — | Masuda et al. 2024 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 6.40 Rearth | 5.65 Mearth | — | Masuda et al. 2024 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 5.03 Rearth | — | — | Fulton & Petigura 2018 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | — | 3.73 Mearth | — | Ofir et al. 2025 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | — | — | — | Holczer et al. 2016 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.40 Rearth | 3.90 Mearth | — | Hadden & Lithwick 2017 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | — | 5.44 Rearth | — | — | Berger et al. 2018 |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.32 day | 6.34 Rearth | — | 423 K | Q1-Q17 DR25 KOI Table |
| 2012 | Transit | Kepler | 0.95 m Kepler Telescope | 85.31 day | 8.98 Rearth | 4.43 Mearth | — | Libby-Roberts et al. 2020 |