Discovery Method
Transit
Consistent across records
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ExoplanetDetail
GJ 1214 b
Host star GJ 1214 • 2.73 R⊕ • 1.58 d orbit
Records
20
archive rows
Discovery
2009
Transit
Radius
2.73 R⊕
default parameter set
Mass
8.41 M⊕
default parameter set
GJ 1214
567 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: Mahajan et al. 2024
Host Star
GJ 1214
Stable across source rows
Discovery Year
2009
Stable across source rows
Orbital Period
1.58 day
1.58 to 1.58
Semi-Major Axis
0.02 au
0.01 to 0.02
Radius
2.73 Rearth
2.27 to 2.85
Mass
8.41 Mearth
6.26 to 8.41
Density
2.26 g/cm**3
1.49 to 3.03
Equilibrium Temperature
567 K
547 to 604
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 2.73 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
GJ 1214 b
2.73 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
20
Refs
19
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massdisputed
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Narita et al. 2013 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | de Mooij et al. 2012 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.85 Rearth | 6.26 Mearth | — | Harpsøe et al. 2013 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.61 Rearth | — | — | Sada et al. 2010 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.64 Rearth | — | — | Berta et al. 2011 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.74 Rearth | 6.37 Mearth | 547 K | Kundurthy et al. 2011 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.65 Rearth | 6.45 Mearth | — | Carter et al. 2011 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.27 Rearth | 6.43 Mearth | — | Carter et al. 2011 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.68 Rearth | 6.55 Mearth | 555 K | Charbonneau et al. 2009 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | — | — | — | — | Berta et al. 2012 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Bean et al. 2011 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Kreidberg et al. 2014 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | 604 K | Gillon et al. 2014 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Schlawin et al. 2024 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Cáceres et al. 2014 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.74 Rearth | 8.17 Mearth | 596 K | Cloutier et al. 2021 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Kokori et al. 2022 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Kokori et al. 2023 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | 2.73 Rearth | 8.41 Mearth | 567 K | Mahajan et al. 2024 |
| 2009 | Transit | MEarth Project | 0.4 m MEarth Telescope | 1.58 day | — | — | — | Yalçınkaya et al. 2024 |