Key parameters at a glance
- A radius of 2.43 Earth radii
- A mass of 6.48 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 53.529 days
- Semi-major axis 0.2548 AU
- Equilibrium temperature 348 K (75 °C)
- Distance from Earth 1,582.89 light-years
- Earth Similarity Index 0.677
- Travel time at Voyager 1 speed 27,914,330 years
Kepler-786 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1281of 1978
top 64.7%
This planet
2.43R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-786 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.43 | 11.21 |
| Mass (M⊕) | 1.00 | 6.48 | 317.83 |
| Density (g/cm³) | 5.51 | 2.48 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 3.66 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138366498
Gaia DR2
Gaia DR2 2052392835854583936
Gaia DR3
Gaia DR3 2052392835854583936
System
Kepler-786
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 53.53 Earth days (14.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2548 AU.
Transit Fingerprint
Depth
0.109 %
Duration
5.577 h
Impact parameter b
0.096
Rp / R★
0.030245
Transit midpoint (BJD)
2,454,980.8642
Photometric dip
Transit produces a flux drop of 1,086 ppm lasting ≈ 5.58 h.
Extended Orbital Architecture
Planet / star radius ratio
0.030245
Semi-major axis / stellar radius
75.210
Impact parameter (b)
0.096
Transit mid-time (BJD)
2,454,980.8642
Angular separation (arcsec)
0.52500
Eq. Temperature
348K
(75 °C)
Insolation (S⊕)
3.66
Earth = 1.00
Earth Similarity (ESI)
0.677
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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-786
Spectral Class
K-type orange
Effective Temperature
4,838 K — cooler than the Sun (5,778 K)
Estimated Age
2.51 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.740 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
0.09
Extended Stellar Properties
Surface gravity (log g)
4.610 dex
Stellar density
2.070 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.032 mas
Total Proper Motion
11.630 mas/yr
PM Right Ascension
-4.76 mas/yr
PM Declination
-10.61 mas/yr
Galactic Cartesian (pc)
x = 0.313 · y = -0.712 · z = 0.628
Equatorial (J2000)
RA 293.74392° · Dec 38.93922°
Galactic ℓ, b
72.283° · 8.967°
Ecliptic λ, β
307.833° · 59.299°
HTM-20 index
1328539414
Similar Worlds
Kepler-1526 b
Sub-Neptune · K-type orange
Radius 2.43 R⊕ · 1,812.0 ly
K2-324 b
Sub-Neptune · K-type orange
Radius 2.43 R⊕ · 445.7 ly
Kepler-55 b
Sub-Neptune · K-type orange
Radius 2.43 R⊕ · 1,887.8 ly
TOI-904 b
Sub-Neptune · K-type orange
Radius 2.43 R⊕ · 150.3 ly
Kepler-1716 b
Sub-Neptune · K-type orange
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Kepler-1858 b
Sub-Neptune · K-type orange
Radius 2.42 R⊕ · 2,717.1 ly