Key parameters at a glance
- A radius of 1.20 Earth radii
- A mass of 1.87 Earth masses
- Surface gravity around 1.30 g
- An orbital period of 7.782 days
- Semi-major axis 0.0780 AU
- Equilibrium temperature 983 K (710 °C)
- Distance from Earth 1,938.82 light-years
- Earth Similarity Index 0.317
- Travel time at Voyager 1 speed 34,191,169 years
2 siblings around Kepler-206
Kepler-206 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-206 b this | Rocky Terrestrial | 1.20 | 1.87 | 7.782 | 983 | 2014 |
| Kepler-206 c | Super-Earth | 1.77 | 3.78 | 13.137 | 825 | 2014 |
| Kepler-206 d | Rocky Terrestrial | 1.19 | 1.81 | 23.443 | 681 | 2014 |
Kepler-206 b Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#75of 570
top 13.0%
This planet
1.20R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-206 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.20 | 11.21 |
| Mass (M⊕) | 1.00 | 1.87 | 317.83 |
| Density (g/cm³) | 5.51 | 5.95 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 192.27 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137342279
Gaia DR2
Gaia DR2 2101715862321812736
Gaia DR3
Gaia DR3 2101715862321812736
System
Kepler-206
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.78 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0780 AU.
Transit Fingerprint
Depth
0.011 %
Duration
3.644 h
Impact parameter b
0.330
Rp / R★
0.009550
Transit midpoint (BJD)
2,454,966.5899
Photometric dip
Transit produces a flux drop of 107 ppm lasting ≈ 3.64 h.
Extended Orbital Architecture
Planet / star radius ratio
0.009550
Semi-major axis / stellar radius
12.000
Impact parameter (b)
0.330
Transit mid-time (BJD)
2,454,966.5899
Angular separation (arcsec)
0.13100
Eq. Temperature
983K
(710 °C)
Insolation (S⊕)
192.27
Earth = 1.00
Earth Similarity (ESI)
0.317
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-206
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,764 K — cooler than the Sun (5,778 K)
Estimated Age
8.32 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.185 R☉
Stellar Mass
0.957 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.311 dex
Stellar density
0.780 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.653 mas
Total Proper Motion
5.869 mas/yr
PM Right Ascension
1.11 mas/yr
PM Declination
-5.76 mas/yr
Galactic Cartesian (pc)
x = 0.275 · y = -0.693 · z = 0.667
Equatorial (J2000)
RA 291.63466° · Dec 41.83384°
Galactic ℓ, b
74.167° · 11.710°
Ecliptic λ, β
306.578° · 62.552°
HTM-20 index
-307371590
Similar Worlds
Kepler-85 d
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 2,495.2 ly
Kepler-282 c
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 4,362.7 ly
Kepler-1500 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 3,972.0 ly
Kepler-770 c
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 3,034.7 ly
K2-187 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 1,079.3 ly
EPIC 212624936 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 1.20 R⊕ · 1,832.8 ly