Key parameters at a glance

A radius of 2.18 Earth radii
A mass of 8.70 Earth masses
Surface gravity around 1.83 g
An orbital period of 8.925 days
Semi-major axis 0.0780 AU
Equilibrium temperature 628 K (355 °C)
Distance from Earth 855.67 light-years
Earth Similarity Index 0.250
Travel time at Voyager 1 speed 15,089,802 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around Kepler-113

Kepler-113 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-113 b	Super-Earth	1.82	11.70	4.754	775	2014
Kepler-113 c this	Sub-Neptune	2.18	8.70	8.925	628	2014

Kepler-113 c Planet Profile

Physical Specs

Radius

2.18 R⊕

Radius (Jupiter)

0.194 R♃

Mass

8.70 M⊕

Mass (Jupiter)

0.027 M♃

Density

0.31 g/cm³

Surface Gravity

1.83 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.250

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

#1703of 1978

top 86.0%

This planet

2.18R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

GJ 3090 b 2.18 R⊕ Kepler-261 b 2.18 R⊕ Kepler-250 d 2.18 R⊕

Metric	Earth	Kepler-113 c	Jupiter
Radius (R⊕)	1.00	2.18	11.21
Mass (M⊕)	1.00	8.70	317.83
Density (g/cm³)	5.51	0.31	1.33
Surface Gravity (g)	1.00	1.83	2.53
Insolation (S⊕)	1.00	45.60	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	8.700 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	1.055 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 298834019

Gaia DR2

Gaia DR2 2133369840008452224

Gaia DR3

Gaia DR3 2133369840008452224

System

Kepler-113

Percentile among Sub-Neptune cohort

Radius 2.180 R⊕ · percentile 13 / cohort 1978

Mass 8.700 M⊕ · percentile 61 / cohort 1978

Orbital period 8.93 d · percentile 30 / cohort 1946

Distance 262.35 pc · percentile 32 / cohort 1975

ESI 0.250 · percentile 16 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

8.925 days

Semi-major axis

0.0780 AU

Eccentricity

0.000

Inclination

87.69 °

Year Length

A year here lasts approximately 8.93 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0780 AU.

Transit Fingerprint

Depth

0.098 %

Duration

2.677 h

Impact parameter b

0.560

Rp / R★

0.029135

Transit midpoint (BJD)

2,454,972.7137

Photometric dip

Transit produces a flux drop of 978 ppm lasting ≈ 2.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.029135

Semi-major axis / stellar radius

15.100

Impact parameter (b)

0.560

RV semi-amplitude (K)

0.380 m/s

Transit mid-time (BJD)

2,454,972.7137

Angular separation (arcsec)

0.29700

Eq. Temperature

628K

(355 °C)

Insolation (S⊕)

45.60

Earth = 1.00

Earth Similarity (ESI)

0.250

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.

Detection Signatures

Transit photometry

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

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Marcy et al. 2014

Instrument

Kepler CCD Array

Publication

2014-02

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-113

Spectral Class

K-type orange

Effective Temperature

4,725 K — cooler than the Sun (5,778 K)

Estimated Age

6.89 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.690 R☉

Stellar Mass

0.750 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.636 dex

Stellar density

2.710 g/cm³

Rotational v·sin i

0.40 km/s

Metallicity ratio

[Fe/H]

Distance

262.35 parsec

Light-years 855.67 ly

V-band magnitude

13.66 mag

Voyager-speed travel 15,089,802 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.783 mas

Total Proper Motion

39.325 mas/yr

PM Right Ascension

-5.91 mas/yr

PM Declination

-38.88 mas/yr

Galactic Cartesian (pc)

x = 0.195 · y = -0.599 · z = 0.777

Equatorial (J2000)

RA 287.99787° · Dec 50.94418°

Galactic ℓ, b

81.732° · 17.690°

Ecliptic λ, β

308.938° · 71.956°

HTM-20 index

94128134

Similar Worlds

Kepler-250 d

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 2,480.7 ly

Kepler-261 b

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 1,035.5 ly

TOI-238 c

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 262.7 ly

Kepler-662 b

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 2,660.2 ly

Kepler-245 c

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 2,809.9 ly

K2-379 b

Sub-Neptune · K-type orange

Radius 2.18 R⊕ · 594.3 ly

Explore Related Categories

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