Key parameters at a glance

A radius of 2.34 Earth radii
A mass of 6.08 Earth masses
Surface gravity around 1.11 g
An orbital period of 13.540 days
Semi-major axis 0.1264 AU
Equilibrium temperature 1,079 K (806 °C)
Distance from Earth 4,840.97 light-years
Earth Similarity Index 0.236
Travel time at Voyager 1 speed 85,370,509 years

Kepler-1158 b Planet Profile

Physical Specs

Radius

2.34 R⊕

Radius (Jupiter)

0.209 R♃

Mass

6.08 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.61 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.236

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

#1429of 1978

top 72.2%

This planet

2.34R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-246 b 2.34 R⊕ Kepler-275 b 2.34 R⊕ Kepler-338 c 2.34 R⊕

Metric	Earth	Kepler-1158 b	Jupiter
Radius (R⊕)	1.00	2.34	11.21
Mass (M⊕)	1.00	6.08	317.83
Density (g/cm³)	5.51	2.61	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	449.70	0.037

Star Catalogue Identifiers

TIC

TIC 137557778

Gaia DR2

Gaia DR2 2101670713625146112

Gaia DR3

Gaia DR3 2101670713625146112

System

Kepler-1158

Percentile among Sub-Neptune cohort

Radius 2.340 R⊕ · percentile 27 / cohort 1978

Mass 6.080 M⊕ · percentile 26 / cohort 1978

Orbital period 13.54 d · percentile 46 / cohort 1946

Distance 1,484.25 pc · percentile 93 / cohort 1975

ESI 0.236 · percentile 13 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.540 days

Semi-major axis

0.1264 AU

Eccentricity

0.000

Inclination

89.46 °

Year Length

A year here lasts approximately 13.54 Earth days (3.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1264 AU.

Transit Fingerprint

Depth

0.013 %

Duration

4.338 h

Impact parameter b

0.710

Rp / R★

0.010604

Transit midpoint (BJD)

2,454,976.1516

Photometric dip

Transit produces a flux drop of 134 ppm lasting ≈ 4.34 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010604

Semi-major axis / stellar radius

23.260

Impact parameter (b)

0.710

Transit mid-time (BJD)

2,454,976.1516

Angular separation (arcsec)

0.08520

Eq. Temperature

1,079K

(806 °C)

Insolation (S⊕)

449.70

Earth = 1.00

Earth Similarity (ESI)

0.236

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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: Kepler-1158

Spectral Class

F-type yellow-white

Effective Temperature

6,203 K — hotter than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.950 R☉

Stellar Mass

1.410 M☉

Metallicity [Fe/H]

0.18

Extended Stellar Properties

Surface gravity (log g)

4.010 dex

Stellar density

0.140 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,484.25 parsec

Light-years 4,840.97 ly

V-band magnitude

13.62 mag

Voyager-speed travel 85,370,509 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.645 mas

Total Proper Motion

4.051 mas/yr

PM Right Ascension

-1.41 mas/yr

PM Declination

-3.80 mas/yr

Galactic Cartesian (pc)

x = 0.283 · y = -0.692 · z = 0.664

Equatorial (J2000)

RA 292.23390° · Dec 41.57518°

Galactic ℓ, b

74.132° · 11.195°

Ecliptic λ, β

307.313° · 62.164°

HTM-20 index

-427108584