Kepler-1229 b
Rank #8 of the ranked catalogue · Discovered by Transit in 2016
0.716
Earth-2.0 index
rank #8
0.819
Earth Similarity Index
0.792–0.842 (68% CI)
100%
Conservative HZ probability
1.40 R⊕
Radius
mass: inferred_mass_radius
At a glance
Kepler-1229 lies 865.89 light-years (265.482 pc) from the Sun. Kepler-1229 is the host star with 0.54× the Sun's mass and 0.51× its radius (effective temperature 3784 K, versus the Sun's 5772 K). It is a single star hosting 1 known planet. Kepler-1229 b is 1.4× Earth's radius, an estimated 2.54× Earth's mass, inferred from its radius rather than measured, completing one orbit every 86.8 days at 0.3006 AU. It receives about 0.52× the flux Earth gets from the Sun, for an equilibrium temperature near 216 K (Earth's is 254 K).
Orbit and habitable-zone boundaries computed in Python from this system’s actual parameters. Sizes and the overall scale are compressed for visibility, not literal; green = conservative HZ, gold = optimistic HZ.
| Boundary | S_eff (Earth units) |
|---|---|
| recent venus | 1.5455 |
| runaway greenhouse | 0.8810 |
| moist greenhouse | 0.8827 |
| maximum greenhouse | 0.2541 |
| early mars | 0.2292 |
No published transmission spectrum exists for this planet in the NASA Exoplanet Archive.
Fitted depth disagrees with the published value. In a multi-planet system this usually means the fold is contaminated by other planets' transits rather than isolating the target. This fit is NOT reported as a measurement.
Not requested for this build.
| Parameter | Value | Source |
|---|---|---|
| Planet radius | 1.4000 | Morton et al. 2016 |
| Planet mass | 2.5400 | archive-calculated (not a publication) |
| Orbital period | 86.8290 | Morton et al. 2016 |
| Semi-major axis | 0.3006 | Torres et al. 2017 |
| Incident flux | 0.5240 | Berger et al. 2018 |
| Equilibrium temperature | 212.0000 | Torres et al. 2017 |
| Bulk density | 5.0900 | archive-calculated (not a publication) |
| Orbital eccentricity | 0.0000 | Q1-Q17 DR25 KOI Table |
| Stellar effective temperature | 3784.0000 | Morton et al. 2016 |
| Stellar radius | 0.5100 | Morton et al. 2016 |
| Stellar mass | 0.5400 | Morton et al. 2016 |
| Stellar luminosity | -1.5330 | Torres et al. 2017 |
| Stellar metallicity | -0.0600 | Morton et al. 2016 |
| Stellar age | 3.7200 | Morton et al. 2016 |
| System distance | 265.4820 | TICv8 |
Component scores
Earth similarity
0.819Conservative habitability
0.733Observational confidence
0.571Characterisation potential
0.209Evidence
- Independent references
- 11
- Published parameter sets
- 11
- Composite parameter sources
- 6 · mixed
- Default-solution coverage
- 50%
- Composite ↔ default difference
- 0% median
- Uncertainty coverage
- 83%
- Discovery method
- Transit
- Discovery year
- 2016
The archive composite selects values from multiple publications. This is disclosed separately and is not automatically penalised.
Observability
- TSM
- 0.42
- RV semi-amplitude (expected)
- 0.553 m/s
- Transit-time σ at 2030
- 132.9 min
- Max angular separation
- 1.13 mas
- Reflected-light contrast
- 3.77e-9
Follow-up lanes are diagnostics, not ranking inputs. Reflected light assumes Ag = 0.30 and Lambertian quadrature.
Identifiers
- system_name
- Kepler-1229
Any rendering of this world is a scientifically informed visualisation, not an image. No exoplanet has been imaged at surface resolution. Surface and cloud appearance are illustrative of a physically plausible class, not observations.