Key parameters at a glance

A radius of 1.24 Earth radii
A mass of 2.07 Earth masses
Surface gravity around 1.35 g
An orbital period of 6.740 days
Semi-major axis 0.0680 AU
Equilibrium temperature 1,011 K (738 °C)
Distance from Earth 2,726.28 light-years
Earth Similarity Index 0.306
Travel time at Voyager 1 speed 48,077,933 years

Kepler-1386 b Planet Profile

Physical Specs

Radius

1.24 R⊕

Radius (Jupiter)

0.111 R♃

Mass

2.07 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.97 g/cm³

Surface Gravity

1.35 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.306

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#4of 570

top 0.5%

This planet

1.24R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-354 d 1.24 R⊕ Kepler-373 c 1.24 R⊕ Kepler-383 c 1.24 R⊕

Metric	Earth	Kepler-1386 b	Jupiter
Radius (R⊕)	1.00	1.24	11.21
Mass (M⊕)	1.00	2.07	317.83
Density (g/cm³)	5.51	5.97	1.33
Surface Gravity (g)	1.00	1.35	2.53
Insolation (S⊕)	1.00	196.53	0.037

Star Catalogue Identifiers

TIC

TIC 123201193

Gaia DR2

Gaia DR2 2116750034560253184

Gaia DR3

Gaia DR3 2116750034560253184

System

Kepler-1386

Percentile among Rocky Terrestrial cohort

Radius 1.240 R⊕ · percentile 98 / cohort 570

Mass 2.070 M⊕ · percentile 89 / cohort 570

Orbital period 6.74 d · percentile 65 / cohort 567

Distance 835.88 pc · percentile 87 / cohort 566

ESI 0.306 · percentile 40 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

6.740 days

Semi-major axis

0.0680 AU

Eccentricity

0.000

Inclination

85.98 °

Year Length

A year here lasts approximately 6.74 Earth days (1.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0680 AU.

Transit Fingerprint

Depth

0.014 %

Duration

4.106 h

Impact parameter b

0.123

Rp / R★

0.010741

Transit midpoint (BJD)

2,454,965.2865

Photometric dip

Transit produces a flux drop of 142 ppm lasting ≈ 4.11 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010741

Semi-major axis / stellar radius

12.600

Impact parameter (b)

0.123

Transit mid-time (BJD)

2,454,965.2865

Angular separation (arcsec)

0.08140

Eq. Temperature

1,011K

(738 °C)

Insolation (S⊕)

196.53

Earth = 1.00

Earth Similarity (ESI)

0.306

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1386

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,733 K — cooler than the Sun (5,778 K)

Estimated Age

5.01 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.030 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

0.11

Extended Stellar Properties

Surface gravity (log g)

4.410 dex

Stellar density

0.832 g/cm³

Systemic radial velocity

-45.53 km/s

Rotational v·sin i

6.60 km/s

Metallicity ratio

[Fe/H]

Distance

835.88 parsec

Light-years 2,726.28 ly

V-band magnitude

14.60 mag

Voyager-speed travel 48,077,933 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.168 mas

Total Proper Motion

6.867 mas/yr

PM Right Ascension

-0.55 mas/yr

PM Declination

6.85 mas/yr

Galactic Cartesian (pc)

x = 0.138 · y = -0.723 · z = 0.677

Equatorial (J2000)

RA 280.82336° · Dec 42.63605°

Galactic ℓ, b

71.722° · 19.397°

Ecliptic λ, β

289.339° · 65.350°

HTM-20 index

-1789140887