Key parameters at a glance

A radius of 1.00 Earth radii
A mass of 0.97 Earth masses
Surface gravity around 0.97 g
An orbital period of 5.342 days
Semi-major axis 0.0590 AU
Equilibrium temperature 1,125 K (852 °C)
Distance from Earth 2,222.52 light-years
Earth Similarity Index 0.284
Travel time at Voyager 1 speed 39,194,108 years

1 sibling around Kepler-392

Kepler-392 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-392 b this	Rocky Terrestrial	1.00	0.97	5.342	1,125	2014
Kepler-392 c	Rocky Terrestrial	1.10	1.37	10.423	901	2014

Kepler-392 b Planet Profile

Physical Specs

Radius

1.00 R⊕

Radius (Jupiter)

0.089 R♃

Mass

0.97 M⊕

Mass (Jupiter)

0.003 M♃

Density

5.34 g/cm³

Surface Gravity

0.97 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.284

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#335of 570

top 58.6%

This planet

1.00R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

K2-239 c 1.00 R⊕ Kepler-1464 c 1.00 R⊕ Kepler-1417 b 1.00 R⊕

Metric	Earth	Kepler-392 b	Jupiter
Radius (R⊕)	1.00	1.00	11.21
Mass (M⊕)	1.00	0.97	317.83
Density (g/cm³)	5.51	5.34	1.33
Surface Gravity (g)	1.00	0.97	2.53
Insolation (S⊕)	1.00	450.65	0.037

Star Catalogue Identifiers

TIC

TIC 158796434

Gaia DR2

Gaia DR2 2102948483573807616

Gaia DR3

Gaia DR3 2102948483573807616

System

Kepler-392

Percentile among Rocky Terrestrial cohort

Radius 1.000 R⊕ · percentile 40 / cohort 570

Mass 0.972 M⊕ · percentile 36 / cohort 570

Orbital period 5.34 d · percentile 57 / cohort 567

Distance 681.43 pc · percentile 78 / cohort 566

ESI 0.284 · percentile 34 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

5.342 days

Semi-major axis

0.0590 AU

Eccentricity

0.000

Inclination

89.65 °

Year Length

A year here lasts approximately 5.34 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0590 AU.

Transit Fingerprint

Depth

0.007 %

Duration

3.043 h

Impact parameter b

0.240

Rp / R★

0.007764

Transit midpoint (BJD)

2,454,969.3014

Photometric dip

Transit produces a flux drop of 71 ppm lasting ≈ 3.04 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007764

Semi-major axis / stellar radius

11.480

Impact parameter (b)

0.240

Transit mid-time (BJD)

2,454,969.3014

Angular separation (arcsec)

0.08660

Eq. Temperature

1,125K

(852 °C)

Insolation (S⊕)

450.65

Earth = 1.00

Earth Similarity (ESI)

0.284

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-392

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,938 K — hotter than the Sun (5,778 K)

Estimated Age

2.97 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.129 R☉

Stellar Mass

0.874 M☉

Metallicity [Fe/H]

-0.44

Extended Stellar Properties

Surface gravity (log g)

4.323 dex

Stellar density

0.590 g/cm³

Metallicity ratio

[M/H]

Distance

681.43 parsec

Light-years 2,222.52 ly

V-band magnitude

13.53 mag

Voyager-speed travel 39,194,108 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.439 mas

Total Proper Motion

28.161 mas/yr

PM Right Ascension

12.51 mas/yr

PM Declination

25.23 mas/yr

Galactic Cartesian (pc)

x = 0.233 · y = -0.689 · z = 0.687

Equatorial (J2000)

RA 288.66083° · Dec 43.36819°

Galactic ℓ, b

74.644° · 14.343°

Ecliptic λ, β

302.953° · 64.687°

HTM-20 index

258530854