Key parameters at a glance
- A radius of 3.41 Earth radii
- A mass of 11.50 Earth masses
- Surface gravity around 0.99 g
- An orbital period of 21.022 days
- Semi-major axis 0.1362 AU
- Equilibrium temperature 521 K (248 °C)
- Distance from Earth 2,845.69 light-years
- Earth Similarity Index 0.422
- Travel time at Voyager 1 speed 50,183,710 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-712
Kepler-712 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-712 b this | Sub-Neptune | 3.41 | 11.50 | 21.022 | 521 | 2016 |
| Kepler-712 c | Neptune-like | 4.85 | 21.00 | 226.890 | 236 | 2016 |
Kepler-712 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#213of 1978
top 10.7%
This planet
3.41R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-712 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.41 | 11.21 |
| Mass (M⊕) | 1.00 | 11.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.59 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 15.80 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271347119
Gaia DR2
Gaia DR2 2077961463362645632
Gaia DR3
Gaia DR3 2077961463362645632
System
Kepler-712
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 21.02 Earth days (5.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1361 AU.
Transit Fingerprint
Depth
0.177 %
Duration
4.091 h
Impact parameter b
0.760
Rp / R★
0.039816
Transit midpoint (BJD)
2,455,040.6771
Photometric dip
Transit produces a flux drop of 1,773 ppm lasting ≈ 4.09 h.
Extended Orbital Architecture
Planet / star radius ratio
0.039816
Semi-major axis / stellar radius
40.546
Impact parameter (b)
0.760
Transit mid-time (BJD)
2,455,040.6771
Angular separation (arcsec)
0.15600
Eq. Temperature
521K
(248 °C)
Insolation (S⊕)
15.80
Earth = 1.00
Earth Similarity (ESI)
0.422
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
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-712
Spectral Class
K-type orange
Effective Temperature
5,148 K — cooler than the Sun (5,778 K)
Estimated Age
3.31 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.780 R☉
Stellar Mass
0.840 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
1.930 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.119 mas
Total Proper Motion
11.333 mas/yr
PM Right Ascension
-5.45 mas/yr
PM Declination
-9.94 mas/yr
Galactic Cartesian (pc)
x = 0.308 · y = -0.664 · z = 0.681
Equatorial (J2000)
RA 294.90967° · Dec 42.93520°
Galactic ℓ, b
76.283° · 10.054°
Ecliptic λ, β
312.348° · 62.759°
HTM-20 index
-1455566442
Similar Worlds
K2-105 b
Sub-Neptune · K-type orange
Radius 3.40 R⊕ · 645.8 ly
GJ 3222 b
Sub-Neptune · K-type orange
Radius 3.40 R⊕ · 59.5 ly
K2-395 c
Sub-Neptune · K-type orange
Radius 3.40 R⊕ · 935.2 ly
Kepler-357 d
Sub-Neptune · K-type orange
Radius 3.43 R⊕ · 2,245.8 ly
TOI-5789 e
Sub-Neptune · K-type orange
Radius 3.43 R⊕ · 66.7 ly
TOI-1246 d
Sub-Neptune · K-type orange
Radius 3.43 R⊕ · 552.6 ly