Key parameters at a glance

A radius of 1.10 Earth radii
A mass of 1.37 Earth masses
Surface gravity around 1.13 g
An orbital period of 10.423 days
Semi-major axis 0.0930 AU
Equilibrium temperature 901 K (628 °C)
Distance from Earth 2,222.52 light-years
Earth Similarity Index 0.356
Travel time at Voyager 1 speed 39,194,108 years

1 sibling around Kepler-392

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

Kepler-392 c Planet Profile

Physical Specs

Radius

1.10 R⊕

Radius (Jupiter)

0.098 R♃

Mass

1.37 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.66 g/cm³

Surface Gravity

1.13 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.356

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

#224of 570

top 39.1%

This planet

1.10R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

K2-239 d 1.10 R⊕ Kepler-59 b 1.10 R⊕ Kepler-374 c 1.10 R⊕

Metric	Earth	Kepler-392 c	Jupiter
Radius (R⊕)	1.00	1.10	11.21
Mass (M⊕)	1.00	1.37	317.83
Density (g/cm³)	5.51	5.66	1.33
Surface Gravity (g)	1.00	1.13	2.53
Insolation (S⊕)	1.00	185.10	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 1.100 R⊕ · percentile 59 / cohort 570

Mass 1.370 M⊕ · percentile 54 / cohort 570

Orbital period 10.42 d · percentile 79 / cohort 567

Distance 681.43 pc · percentile 78 / cohort 566

ESI 0.356 · percentile 51 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

10.423 days

Semi-major axis

0.0930 AU

Eccentricity

0.000

Inclination

87.72 °

Year Length

A year here lasts approximately 10.42 Earth days (2.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0930 AU.

Transit Fingerprint

Depth

0.008 %

Duration

2.266 h

Impact parameter b

0.080

Rp / R★

0.008552

Transit midpoint (BJD)

2,454,968.1529

Photometric dip

Transit produces a flux drop of 83 ppm lasting ≈ 2.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008552

Semi-major axis / stellar radius

20.410

Impact parameter (b)

0.080

Transit mid-time (BJD)

2,454,968.1529

Angular separation (arcsec)

0.13600

Eq. Temperature

901K

(628 °C)

Insolation (S⊕)

185.10

Earth = 1.00

Earth Similarity (ESI)

0.356

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

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