Key parameters at a glance

A radius of 4.20 Earth radii
A mass of 16.40 Earth masses
Surface gravity around 0.93 g
An orbital period of 20.740 days
Semi-major axis 0.1701 AU
Equilibrium temperature 798 K (525 °C)
Distance from Earth 5,201.34 light-years
Earth Similarity Index 0.256
Travel time at Voyager 1 speed 91,725,629 years

1 sibling around KIC 9663113

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

Kepler-458 c Planet Profile

Physical Specs

Radius

4.20 R⊕

Radius (Jupiter)

0.375 R♃

Mass

16.40 M⊕

Mass (Jupiter)

0.052 M♃

Density

1.22 g/cm³

Surface Gravity

0.93 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.256

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#518of 574

top 90.1%

This planet

4.20R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-549 d 4.20 R⊕ Kepler-511 c 4.21 R⊕ Kepler-610 b 4.19 R⊕

Metric	Earth	Kepler-458 c	Jupiter
Radius (R⊕)	1.00	4.20	11.21
Mass (M⊕)	1.00	16.40	317.83
Density (g/cm³)	5.51	1.22	1.33
Surface Gravity (g)	1.00	0.93	2.53
Insolation (S⊕)	1.00	279.79	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 4.200 R⊕ · percentile 10 / cohort 574

Mass 16.400 M⊕ · percentile 15 / cohort 574

Orbital period 20.74 d · percentile 52 / cohort 524

Distance 1,594.74 pc · percentile 86 / cohort 572

ESI 0.256 · percentile 41 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

20.740 days

Semi-major axis

0.1701 AU

Eccentricity

0.000

Inclination

88.27 °

Year Length

A year here lasts approximately 20.74 Earth days (5.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1701 AU.

Transit Fingerprint

Depth

0.102 %

Duration

10.385 h

Impact parameter b

0.750

Rp / R★

0.029939

Transit midpoint (BJD)

2,454,975.7994

Photometric dip

Transit produces a flux drop of 1,023 ppm lasting ≈ 10.39 h.

Extended Orbital Architecture

Planet / star radius ratio

0.029939

Semi-major axis / stellar radius

10.280

Impact parameter (b)

0.750

Transit mid-time (BJD)

2,454,975.7994

Angular separation (arcsec)

0.10700

Eq. Temperature

798K

(525 °C)

Insolation (S⊕)

279.79

Earth = 1.00

Earth Similarity (ESI)

0.256

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

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: KIC 9663113

Spectral Class

F-type yellow-white

Effective Temperature

6,117 K — hotter than the Sun (5,778 K)

Estimated Age

2.14 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

2.216 R☉

Stellar Mass

1.150 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

3.808 dex

Stellar density

0.149 g/cm³

Metallicity ratio

[M/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