Key parameters at a glance
- A radius of 12.80 Earth radii
- A mass of 1,784.00 Earth masses
- Surface gravity around 10.89 g
- An orbital period of 1,002.000 days
- Semi-major axis 2.1600 AU
- Distance from Earth 2,977.78 light-years
- Earth Similarity Index 0.436
- Travel time at Voyager 1 speed 52,513,230 years
2 siblings around Kepler-56
Kepler-56 d 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-56 b | Neptune-like | 6.51 | 22.10 | 10.502 | 1,378 | 2012 |
| Kepler-56 c | Neptune-like | 9.80 | 181.00 | 21.402 | 1,087 | 2012 |
| Kepler-56 d this | Gas Giant | 12.80 | 1,784.00 | 1,002.000 | — | 2016 |
Kepler-56 d Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1063of 1771
top 60.0%
This planet
12.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-56 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.80 | 11.21 |
| Mass (M⊕) | 1.00 | 1,784.00 | 317.83 |
| Density (g/cm³) | 5.51 | 4.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 10.89 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 1,784.000 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 138430034
Gaia DR2
Gaia DR2 2077617930392844800
Gaia DR3
Gaia DR3 2077617930392844800
System
Kepler-56
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 2.74 Earth years on a mildly elliptical path at a mean orbital distance of 2.1600 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.436
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Otor et al. 2016Instrument
Multiple Instruments
Publication
2016-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at Multiple Observatories (12 shown).
Host System: Kepler-56
Spectral Class
K-type orange
Effective Temperature
4,819 K — cooler than the Sun (5,778 K)
Estimated Age
4.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
4.218 R☉
Stellar Mass
1.290 M☉
Metallicity [Fe/H]
0.36
Extended Stellar Properties
Surface gravity (log g)
3.310 dex
Stellar density
0.030 g/cm³
Systemic radial velocity
-54.30 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.067 mas
Total Proper Motion
13.788 mas/yr
PM Right Ascension
-6.75 mas/yr
PM Declination
-12.02 mas/yr
Galactic Cartesian (pc)
x = 0.300 · y = -0.682 · z = 0.667
Equatorial (J2000)
RA 293.75830° · Dec 41.87181°
Galactic ℓ, b
74.926° · 10.314°
Ecliptic λ, β
309.818° · 62.066°
HTM-20 index
-872674545
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