Key parameters at a glance

A radius of 4.60 Earth radii
A mass of 19.20 Earth masses
Surface gravity around 0.91 g
An orbital period of 572.385 days
Semi-major axis 1.5535 AU
Equilibrium temperature 264 K (-9 °C)
Distance from Earth 5,201.34 light-years
Earth Similarity Index 0.560
Travel time at Voyager 1 speed 91,725,629 years

1 sibling around KIC 9663113

KIC 9663113 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-458 c	Neptune-like	4.20	16.40	20.740	798	2016
KIC 9663113 b this	Neptune-like	4.60	19.20	572.385	264	2015

KIC 9663113 b Planet Profile

Physical Specs

Radius

4.60 R⊕

Radius (Jupiter)

0.410 R♃

Mass

19.20 M⊕

Mass (Jupiter)

0.060 M♃

Density

1.08 g/cm³

Surface Gravity

0.91 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.560

HZ Position Inner

Controversial No

Discovery

Year 2015

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#446of 574

top 77.5%

This planet

4.60R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-223 e 4.60 R⊕ TOI-6478 b 4.60 R⊕ K2-406 b 4.60 R⊕

Metric	Earth	KIC 9663113 b	Jupiter
Radius (R⊕)	1.00	4.60	11.21
Mass (M⊕)	1.00	19.20	317.83
Density (g/cm³)	5.51	1.08	1.33
Surface Gravity (g)	1.00	0.91	2.53
Insolation (S⊕)	1.00	3.36	0.037

Star Catalogue Identifiers

TIC

TIC 272844987

Gaia DR2

Gaia DR2 2080266967444876032

Gaia DR3

Gaia DR3 2080266967444876032

System

KIC 9663113

Percentile among Neptune-like cohort

Radius 4.600 R⊕ · percentile 22 / cohort 574

Mass 19.200 M⊕ · percentile 26 / cohort 574

Orbital period 572.38 d · percentile 96 / cohort 524

Distance 1,594.74 pc · percentile 86 / cohort 572

ESI 0.560 · percentile 99 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

572.385 days

Semi-major axis

1.5535 AU

Eccentricity

0.000

Inclination

89.77 °

Year Length

A year here lasts about 1.57 Earth years on a nearly circular orbit at a mean orbital distance of 1.5535 AU.

Transit Fingerprint

Depth

0.168 %

Duration

23.162 h

Impact parameter b

0.873

Rp / R★

0.041000

Transit midpoint (BJD)

2,455,139.5060

Photometric dip

Transit produces a flux drop of 1,681 ppm lasting ≈ 23.16 h.

Extended Orbital Architecture

Planet / star radius ratio

0.041000

Semi-major axis / stellar radius

153.500

Impact parameter (b)

0.873

Transit mid-time (BJD)

2,455,139.5060

Angular separation (arcsec)

0.97400

Eq. Temperature

264K

(-9 °C)

Insolation (S⊕)

3.36

Earth = 1.00

Earth Similarity (ESI)

0.560

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — surface water would be frozen.

Discovery Paper

Primary reference

Wang et al. 2015

Instrument

Kepler CCD Array

Publication

2015-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2015 at Kepler (12 shown).

Kepler-438 b · Rocky Terrestrial Kepler-445 d · Super-Earth Kepler-442 b · Super-Earth Kepler-439 b · Sub-Neptune Kepler-437 b · Sub-Neptune Kepler-440 b · Super-Earth KIC 8540376 c · Sub-Neptune Kepler-445 b · Super-Earth Kepler-446 d · Super-Earth Kepler-436 b · Sub-Neptune Kepler-445 c · Sub-Neptune Kepler-443 b · Sub-Neptune

Host System: KIC 9663113

Spectral Class

F-type yellow-white

Effective Temperature

6,065 K — hotter than the Sun (5,778 K)

Estimated Age

2.14 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.030 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.28

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

0.160 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,594.74 parsec

Light-years 5,201.34 ly

V-band magnitude

14.03 mag

Voyager-speed travel 91,725,629 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.598 mas

Total Proper Motion

9.088 mas/yr

PM Right Ascension

-2.92 mas/yr

PM Declination

-8.61 mas/yr

Galactic Cartesian (pc)

x = 0.314 · y = -0.615 · z = 0.723

Equatorial (J2000)

RA 297.04540° · Dec 46.32867°

Galactic ℓ, b

80.051° · 10.324°

Ecliptic λ, β

318.623° · 65.266°

HTM-20 index

-2085879992