Key parameters at a glance

A radius of 1.80 Earth radii
A mass of 3.89 Earth masses
Surface gravity around 1.20 g
An orbital period of 91.353 days
Semi-major axis 0.4140 AU
Equilibrium temperature 428 K (155 °C)
Distance from Earth 1,904.29 light-years
Earth Similarity Index 0.639
Travel time at Voyager 1 speed 33,582,173 years

1 sibling around Kepler-140

Kepler-140 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-140 b	Super-Earth	1.61	3.22	3.254	1,301	2014
Kepler-140 c this	Super-Earth	1.80	3.89	91.353	428	2014

Kepler-140 c Planet Profile

Physical Specs

Radius

1.80 R⊕

Radius (Jupiter)

0.161 R♃

Mass

3.89 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.67 g/cm³

Surface Gravity

1.20 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.639

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#253of 1176

top 21.4%

This planet

1.80R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

PSR B1257+12 d 1.80 R⊕ Kepler-11 b 1.80 R⊕ Kepler-148 b 1.80 R⊕

Metric	Earth	Kepler-140 c	Jupiter
Radius (R⊕)	1.00	1.80	11.21
Mass (M⊕)	1.00	3.89	317.83
Density (g/cm³)	5.51	3.67	1.33
Surface Gravity (g)	1.00	1.20	2.53
Insolation (S⊕)	1.00	9.96	0.037

Star Catalogue Identifiers

TIC

TIC 158487888

Gaia DR2

Gaia DR2 2130443730330509312

Gaia DR3

Gaia DR3 2130443730330509312

System

Kepler-140

Percentile among Super-Earth cohort

Radius 1.800 R⊕ · percentile 77 / cohort 1176

Mass 3.890 M⊕ · percentile 71 / cohort 1176

Orbital period 91.35 d · percentile 98 / cohort 1164

Distance 583.86 pc · percentile 53 / cohort 1171

ESI 0.639 · percentile 82 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

91.353 days

Semi-major axis

0.4140 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 91.35 Earth days (25.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4140 AU.

Transit Fingerprint

Depth

0.021 %

Duration

7.919 h

Impact parameter b

0.130

Rp / R★

0.013246

Transit midpoint (BJD)

2,455,022.6056

Photometric dip

Transit produces a flux drop of 209 ppm lasting ≈ 7.92 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013246

Semi-major axis / stellar radius

81.210

Impact parameter (b)

0.130

Transit mid-time (BJD)

2,455,022.6056

Angular separation (arcsec)

0.70900

Eq. Temperature

428K

(155 °C)

Insolation (S⊕)

9.96

Earth = 1.00

Earth Similarity (ESI)

0.639

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

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-140

Spectral Class

F-type yellow-white

Effective Temperature

6,077 K — hotter than the Sun (5,778 K)

Estimated Age

0.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.288 R☉

Stellar Mass

1.044 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.272 dex

Stellar density

0.650 g/cm³

Systemic radial velocity

-33.41 km/s

Metallicity ratio

[M/H]

Distance

583.86 parsec

Light-years 1,904.29 ly

V-band magnitude

13.02 mag

Voyager-speed travel 33,582,173 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.684 mas

Total Proper Motion

19.524 mas/yr

PM Right Ascension

-10.48 mas/yr

PM Declination

-16.48 mas/yr

Galactic Cartesian (pc)

x = 0.204 · y = -0.654 · z = 0.729

Equatorial (J2000)

RA 287.36941° · Dec 46.76815°

Galactic ℓ, b

77.516° · 16.516°

Ecliptic λ, β

303.409° · 68.202°

HTM-20 index

-1671866659