Key parameters at a glance

A radius of 2.20 Earth radii
A mass of 5.48 Earth masses
Surface gravity around 1.13 g
An orbital period of 23.921 days
Semi-major axis 0.1871 AU
Equilibrium temperature 1,020 K (747 °C)
Distance from Earth 3,006.43 light-years
Earth Similarity Index 0.257
Travel time at Voyager 1 speed 53,018,465 years

Kepler-1137 b Planet Profile

Physical Specs

Radius

2.20 R⊕

Radius (Jupiter)

0.196 R♃

Mass

5.48 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.83 g/cm³

Surface Gravity

1.13 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.257

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

#1673of 1978

top 84.5%

This planet

2.20R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 110067 b 2.20 R⊕ Kepler-169 e 2.20 R⊕ Kepler-122 d 2.20 R⊕

Metric	Earth	Kepler-1137 b	Jupiter
Radius (R⊕)	1.00	2.20	11.21
Mass (M⊕)	1.00	5.48	317.83
Density (g/cm³)	5.51	2.83	1.33
Surface Gravity (g)	1.00	1.13	2.53
Insolation (S⊕)	1.00	197.85	0.037

Star Catalogue Identifiers

TIC

TIC 399913391

Gaia DR2

Gaia DR2 2131213903865285760

Gaia DR3

Gaia DR3 2131213903865285760

System

Kepler-1137

Percentile among Sub-Neptune cohort

Radius 2.200 R⊕ · percentile 15 / cohort 1978

Mass 5.480 M⊕ · percentile 15 / cohort 1978

Orbital period 23.92 d · percentile 68 / cohort 1946

Distance 921.78 pc · percentile 73 / cohort 1975

ESI 0.257 · percentile 18 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

23.921 days

Semi-major axis

0.1871 AU

Eccentricity

0.000

Inclination

86.12 °

Year Length

A year here lasts approximately 23.92 Earth days (6.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1871 AU.

Transit Fingerprint

Depth

0.015 %

Duration

4.692 h

Impact parameter b

0.169

Rp / R★

0.011426

Transit midpoint (BJD)

2,454,972.0758

Photometric dip

Transit produces a flux drop of 151 ppm lasting ≈ 4.69 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011426

Semi-major axis / stellar radius

13.900

Impact parameter (b)

0.169

Transit mid-time (BJD)

2,454,972.0758

Angular separation (arcsec)

0.20300

Eq. Temperature

1,020K

(747 °C)

Insolation (S⊕)

197.85

Earth = 1.00

Earth Similarity (ESI)

0.257

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-1137

Spectral Class

F-type yellow-white

Effective Temperature

6,807 K — hotter than the Sun (5,778 K)

Estimated Age

1.58 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.840 R☉

Stellar Mass

1.500 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.080 dex

Stellar density

0.368 g/cm³

Systemic radial velocity

1.82 km/s

Metallicity ratio

[Fe/H]

Distance

921.78 parsec

Light-years 3,006.43 ly

V-band magnitude

12.83 mag

Voyager-speed travel 53,018,465 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.056 mas

Total Proper Motion

3.522 mas/yr

PM Right Ascension

2.07 mas/yr

PM Declination

-2.85 mas/yr

Galactic Cartesian (pc)

x = 0.195 · y = -0.631 · z = 0.751

Equatorial (J2000)

RA 287.13024° · Dec 48.66535°

Galactic ℓ, b

79.293° · 17.374°

Ecliptic λ, β

304.748° · 70.046°

HTM-20 index

-691363857