Key parameters at a glance

A radius of 1.59 Earth radii
A mass of 3.15 Earth masses
Surface gravity around 1.25 g
An orbital period of 3.532 days
Semi-major axis 0.0459 AU
Equilibrium temperature 1,159 K (886 °C)
Distance from Earth 3,361.69 light-years
Earth Similarity Index 0.249
Travel time at Voyager 1 speed 59,283,398 years

Kepler-1131 b Planet Profile

Physical Specs

Radius

1.59 R⊕

Radius (Jupiter)

0.142 R♃

Mass

3.15 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.31 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.249

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

#588of 1176

top 49.9%

This planet

1.59R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-55 f 1.59 R⊕ Kepler-200 c 1.59 R⊕ Kepler-256 b 1.59 R⊕

Metric	Earth	Kepler-1131 b	Jupiter
Radius (R⊕)	1.00	1.59	11.21
Mass (M⊕)	1.00	3.15	317.83
Density (g/cm³)	5.51	4.31	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	453.14	0.037

Star Catalogue Identifiers

TIC

TIC 27642556

Gaia DR2

Gaia DR2 2134776218463088896

Gaia DR3

Gaia DR3 2134776218463088896

System

Kepler-1131

Percentile among Super-Earth cohort

Radius 1.590 R⊕ · percentile 49 / cohort 1176

Mass 3.150 M⊕ · percentile 45 / cohort 1176

Orbital period 3.53 d · percentile 26 / cohort 1164

Distance 1,030.70 pc · percentile 82 / cohort 1171

ESI 0.249 · percentile 23 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.532 days

Semi-major axis

0.0459 AU

Eccentricity

0.000

Inclination

88.19 °

Year Length

A year here lasts approximately 3.53 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0459 AU.

Transit Fingerprint

Depth

0.024 %

Duration

2.807 h

Impact parameter b

0.012

Rp / R★

0.014047

Transit midpoint (BJD)

2,454,967.7448

Photometric dip

Transit produces a flux drop of 237 ppm lasting ≈ 2.81 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014047

Semi-major axis / stellar radius

9.765

Impact parameter (b)

0.012

Transit mid-time (BJD)

2,454,967.7448

Angular separation (arcsec)

0.04450

Eq. Temperature

1,159K

(886 °C)

Insolation (S⊕)

453.14

Earth = 1.00

Earth Similarity (ESI)

0.249

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-1131

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,851 K — hotter than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.040 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

1.412 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,030.70 parsec

Light-years 3,361.69 ly

V-band magnitude

15.01 mag

Voyager-speed travel 59,283,398 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.942 mas

Total Proper Motion

0.879 mas/yr

PM Right Ascension

0.12 mas/yr

PM Declination

0.87 mas/yr

Galactic Cartesian (pc)

x = 0.283 · y = -0.588 · z = 0.758

Equatorial (J2000)

RA 295.65145° · Dec 49.26130°

Galactic ℓ, b

82.244° · 12.527°

Ecliptic λ, β

319.842° · 68.307°

HTM-20 index

1831743983