Key parameters at a glance
- A radius of 1.26 Earth radii
- A mass of 2.13 Earth masses
- Surface gravity around 1.34 g
- An orbital period of 4.139 days
- Semi-major axis 0.0480 AU
- Equilibrium temperature 954 K (681 °C)
- Distance from Earth 1,008.97 light-years
- Earth Similarity Index 0.326
- Travel time at Voyager 1 speed 17,793,244 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-211
Kepler-211 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-211 b this | Super-Earth | 1.26 | 2.13 | 4.139 | 954 | 2014 |
| Kepler-211 c | Super-Earth | 1.29 | 18.30 | 6.040 | 841 | 2014 |
Kepler-211 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1149of 1176
top 97.6%
This planet
1.26R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-211 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.26 | 11.21 |
| Mass (M⊕) | 1.00 | 2.13 | 317.83 |
| Density (g/cm³) | 5.51 | 5.85 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.34 | 2.53 |
| Insolation (S⊕) | 1.00 | 158.19 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 352007758
Gaia DR2
Gaia DR2 2105743987587112064
Gaia DR3
Gaia DR3 2105743987587112064
System
Kepler-211
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.14 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0480 AU.
Transit Fingerprint
Depth
0.027 %
Duration
2.226 h
Impact parameter b
0.020
Rp / R★
0.014629
Transit midpoint (BJD)
2,454,965.0163
Photometric dip
Transit produces a flux drop of 268 ppm lasting ≈ 2.23 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014629
Semi-major axis / stellar radius
5.560
Impact parameter (b)
0.020
Transit mid-time (BJD)
2,454,965.0163
Angular separation (arcsec)
0.15500
Eq. Temperature
954K
(681 °C)
Insolation (S⊕)
158.19
Earth = 1.00
Earth Similarity (ESI)
0.326
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-211
Spectral Class
K-type orange
Effective Temperature
5,123 K — cooler than the Sun (5,778 K)
Estimated Age
1.55 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.816 R☉
Stellar Mass
0.867 M☉
Metallicity [Fe/H]
0.15
Extended Stellar Properties
Surface gravity (log g)
4.547 dex
Stellar density
1.820 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.204 mas
Total Proper Motion
7.119 mas/yr
PM Right Ascension
-4.01 mas/yr
PM Declination
5.88 mas/yr
Galactic Cartesian (pc)
x = 0.194 · y = -0.703 · z = 0.684
Equatorial (J2000)
RA 285.43912° · Dec 43.16851°
Galactic ℓ, b
73.503° · 16.424°
Ecliptic λ, β
297.503° · 65.140°
HTM-20 index
159556624
Similar Worlds
Kepler-755 c
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TOI-5789 b
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Kepler-1029 b
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Kepler-1697 b
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Kepler-1688 b
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K2-203 b
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