Key parameters at a glance
- A radius of 1.58 Earth radii
- A mass of 3.12 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 25.193 days
- Semi-major axis 0.1550 AU
- Equilibrium temperature 513 K (240 °C)
- Distance from Earth 2,878.20 light-years
- Earth Similarity Index 0.570
- Travel time at Voyager 1 speed 50,757,103 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-386
Kepler-386 c 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-386 b | Super-Earth | 1.39 | 2.51 | 12.310 | 651 | 2014 |
| Kepler-386 c this | Super-Earth | 1.58 | 3.12 | 25.193 | 513 | 2014 |
Kepler-386 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#603of 1176
top 51.2%
This planet
1.58R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-386 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.58 | 11.21 |
| Mass (M⊕) | 1.00 | 3.12 | 317.83 |
| Density (g/cm³) | 5.51 | 4.35 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.66 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 267669725
Gaia DR2
Gaia DR2 2129492824571882240
Gaia DR3
Gaia DR3 2129492824571882240
System
Kepler-386
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 25.19 Earth days (6.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1550 AU.
Transit Fingerprint
Depth
0.048 %
Duration
4.634 h
Impact parameter b
0.000
Rp / R★
0.021858
Transit midpoint (BJD)
2,454,979.4321
Photometric dip
Transit produces a flux drop of 481 ppm lasting ≈ 4.63 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021858
Semi-major axis / stellar radius
41.540
Impact parameter (b)
0.000
Transit mid-time (BJD)
2,454,979.4321
Angular separation (arcsec)
0.17600
Eq. Temperature
513K
(240 °C)
Insolation (S⊕)
16.66
Earth = 1.00
Earth Similarity (ESI)
0.570
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
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-386
Spectral Class
K-type orange
Effective Temperature
5,178 K — cooler than the Sun (5,778 K)
Estimated Age
9.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.767 R☉
Stellar Mass
0.825 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
4.558 dex
Stellar density
1.580 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.105 mas
Total Proper Motion
11.171 mas/yr
PM Right Ascension
7.34 mas/yr
PM Declination
-8.42 mas/yr
Galactic Cartesian (pc)
x = 0.224 · y = -0.621 · z = 0.751
Equatorial (J2000)
RA 289.85892° · Dec 48.69381°
Galactic ℓ, b
80.040° · 15.720°
Ecliptic λ, β
309.623° · 69.416°
HTM-20 index
526806299
Similar Worlds
K2-68 b
Super-Earth · K-type orange
Radius 1.58 R⊕ · 550.1 ly
K2-191 b
Super-Earth · K-type orange
Radius 1.58 R⊕ · 936.7 ly
Kepler-2000 c
Super-Earth · K-type orange
Radius 1.57 R⊕ · 1,045.6 ly
K2-50 b
Super-Earth · K-type orange
Radius 1.59 R⊕ · 839.7 ly
Kepler-55 d
Super-Earth · K-type orange
Radius 1.59 R⊕ · 1,887.8 ly
Kepler-928 b
Super-Earth · K-type orange
Radius 1.59 R⊕ · 1,659.5 ly