Key parameters at a glance
- A radius of 14.62 Earth radii
- A mass of 212.31 Earth masses
- Surface gravity around 0.99 g
- An orbital period of 3.235 days
- Semi-major axis 0.0485 AU
- Equilibrium temperature 1,460 K (1187 °C)
- Distance from Earth 1,914.66 light-years
- Earth Similarity Index 0.080
- Travel time at Voyager 1 speed 33,765,079 years
Kepler-6 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#266of 1771
top 15.0%
This planet
14.62R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-6 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.62 | 11.21 |
| Mass (M⊕) | 1.00 | 212.31 | 317.83 |
| Density (g/cm³) | 5.51 | 0.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 792.22 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 212.310 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 27916356
Gaia DR2
Gaia DR2 2086636884980514304
Gaia DR3
Gaia DR3 2086636884980514304
System
Kepler-6
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.23 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0485 AU.
Transit Fingerprint
Depth
1.081 %
Duration
3.594 h
Impact parameter b
0.141
Rp / R★
0.094240
Transit midpoint (BJD)
2,454,954.4865
Photometric dip
Transit produces a flux drop of 10,814 ppm lasting ≈ 3.59 h.
Extended Orbital Architecture
Planet / star radius ratio
0.094240
Semi-major axis / stellar radius
7.503
Impact parameter (b)
0.141
RV semi-amplitude (K)
80.900 m/s
Occultation depth
0.001 ppm
Transit mid-time (BJD)
2,454,954.4865
Angular separation (arcsec)
0.08270
Eq. Temperature
1,460K
(1187 °C)
Insolation (S⊕)
792.22
Earth = 1.00
Earth Similarity (ESI)
0.080
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Orbital-brightness modulation
Host star brightness varies with the planet's orbit.
Discovery Paper
Primary reference
Dunham et al. 2010Instrument
Kepler CCD Array
Publication
2010-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2009 at Kepler (3 shown).
Host System: Kepler-6
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,647 K — cooler than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.391 R☉
Stellar Mass
1.209 M☉
Metallicity [Fe/H]
0.34
Extended Stellar Properties
Surface gravity (log g)
4.236 dex
Stellar density
0.776 g/cm³
Systemic radial velocity
-49.14 km/s
Rotational v·sin i
3.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
1.675 mas
Total Proper Motion
8.484 mas/yr
PM Right Ascension
0.96 mas/yr
PM Declination
8.43 mas/yr
Galactic Cartesian (pc)
x = 0.301 · y = -0.594 · z = 0.746
Equatorial (J2000)
RA 296.83725° · Dec 48.23997°
Galactic ℓ, b
81.693° · 11.359°
Ecliptic λ, β
320.421° · 67.040°
HTM-20 index
1967146688
Observation Record
Photometric series
1
RV measurements
1
Emission spectra
5
Archive notes
1
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