Key parameters at a glance

A radius of 3.51 Earth radii
A mass of 64.30 Earth masses
Surface gravity around 5.22 g
An orbital period of 13.749 days
Semi-major axis 0.1223 AU
Equilibrium temperature 975 K (702 °C)
Distance from Earth 1,559.00 light-years
Earth Similarity Index 0.214
Travel time at Voyager 1 speed 27,492,956 years

2 siblings around Kepler-92

Kepler-92 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-92 b this	Sub-Neptune	3.51	64.30	13.749	975	2013
Kepler-92 c	Sub-Neptune	2.60	6.10	26.723	781	2013
Kepler-92 d	Sub-Neptune	2.07	11.87	49.357	637	2015

Kepler-92 b Planet Profile

Physical Specs

Radius

3.51 R⊕

Radius (Jupiter)

0.313 R♃

Mass

64.30 M⊕

Mass (Jupiter)

0.202 M♃

Density

2.10 g/cm³

Surface Gravity

5.22 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.214

HZ Position Inner

Controversial No

Discovery

Year 2013

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#176of 1978

top 8.8%

This planet

3.51R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-94 b 3.51 R⊕ TIC 434398831 b 3.51 R⊕ Kepler-234 c 3.51 R⊕

Metric	Earth	Kepler-92 b	Jupiter
Radius (R⊕)	1.00	3.51	11.21
Mass (M⊕)	1.00	64.30	317.83
Density (g/cm³)	5.51	2.10	1.33
Surface Gravity (g)	1.00	5.22	2.53
Insolation (S⊕)	1.00	257.78	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	64.300 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	19.350 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 121943724

Gaia DR2

Gaia DR2 2102224661326132864

Gaia DR3

Gaia DR3 2102224661326132864

System

Kepler-92

Percentile among Sub-Neptune cohort

Radius 3.510 R⊕ · percentile 91 / cohort 1978

Mass 64.300 M⊕ · percentile 98 / cohort 1978

Orbital period 13.75 d · percentile 47 / cohort 1946

Distance 477.99 pc · percentile 46 / cohort 1975

ESI 0.214 · percentile 9 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.749 days

Semi-major axis

0.1223 AU

Eccentricity

0.170

Inclination

87.19 °

Year Length

A year here lasts approximately 13.75 Earth days (3.8% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1223 AU.

Transit Fingerprint

Depth

0.041 %

Duration

6.054 h

Impact parameter b

0.810

Rp / R★

0.021060

Transit midpoint (BJD)

2,455,012.2786

Photometric dip

Transit produces a flux drop of 414 ppm lasting ≈ 6.05 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021060

Semi-major axis / stellar radius

10.620

Impact parameter (b)

0.810

RV semi-amplitude (K)

4.356 m/s

Transit mid-time (BJD)

2,455,012.2786

Angular separation (arcsec)

0.25600

Eq. Temperature

975K

(702 °C)

Insolation (S⊕)

257.78

Earth = 1.00

Earth Similarity (ESI)

0.214

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Xie 2014

Instrument

Kepler CCD Array

Publication

2014-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2013 at Kepler (12 shown).

Kepler-69 c · Super-Earth Kepler-61 b · Sub-Neptune Kepler-62 e · Super-Earth KOI-351 f · Sub-Neptune Kepler-62 f · Super-Earth KOI-351 e · Sub-Neptune Kepler-1704 b · Gas Giant Kepler-37 d · Sub-Neptune Kepler-282 e · Sub-Neptune KOI-351 h · Gas Giant KOI-351 d · Sub-Neptune Kepler-114 c · Super-Earth

Host System: Kepler-92

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,883 K — hotter than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.700 R☉

Stellar Mass

1.210 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.050 dex

Stellar density

0.240 g/cm³

Systemic radial velocity

-41.31 km/s

Metallicity ratio

[M/H]

Distance

477.99 parsec

Light-years 1,559.00 ly

V-band magnitude

11.67 mag

Voyager-speed travel 27,492,956 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

2.063 mas

Total Proper Motion

14.718 mas/yr

PM Right Ascension

-0.13 mas/yr

PM Declination

14.72 mas/yr

Galactic Cartesian (pc)

x = 0.245 · y = -0.707 · z = 0.663

Equatorial (J2000)

RA 289.08606° · Dec 41.56302°

Galactic ℓ, b

73.082° · 13.314°

Ecliptic λ, β

302.442° · 62.869°

HTM-20 index

-1521422322