Key parameters at a glance

A radius of 1.54 Earth radii
A mass of 3.80 Earth masses
Surface gravity around 1.61 g
An orbital period of 3.180 days
Semi-major axis 0.0454 AU
Equilibrium temperature 1,592 K (1319 °C)
Distance from Earth 1,715.57 light-years
Earth Similarity Index 0.176
Travel time at Voyager 1 speed 30,254,089 years

3 siblings around Kepler-107

Kepler-107 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-107 b this	Super-Earth	1.54	3.80	3.180	1,592	2014
Kepler-107 c	Super-Earth	1.60	10.00	4.901	1,378	2014
Kepler-107 d	Rocky Terrestrial	0.86	7.70	7.958	1,173	2014
Kepler-107 e	Sub-Neptune	2.90	14.10	14.749	955	2014

Kepler-107 b Planet Profile

Physical Specs

Radius

1.54 R⊕

Radius (Jupiter)

0.137 R♃

Mass

3.80 M⊕

Mass (Jupiter)

0.012 M♃

Density

5.80 g/cm³

Surface Gravity

1.61 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.176

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

#684of 1176

top 58.1%

This planet

1.54R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

HIP 29442 d 1.54 R⊕ TOI-2431 b 1.53 R⊕ K2-226 b 1.54 R⊕

Metric	Earth	Kepler-107 b	Jupiter
Radius (R⊕)	1.00	1.54	11.21
Mass (M⊕)	1.00	3.80	317.83
Density (g/cm³)	5.51	5.80	1.33
Surface Gravity (g)	1.00	1.61	2.53
Insolation (S⊕)	1.00	1,073.00	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	3.800 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 27988327

Gaia DR2

Gaia DR2 2086625752425381632

Gaia DR3

Gaia DR3 2086625752425381632

System

Kepler-107

Percentile among Super-Earth cohort

Radius 1.536 R⊕ · percentile 42 / cohort 1176

Mass 3.800 M⊕ · percentile 68 / cohort 1176

Orbital period 3.18 d · percentile 23 / cohort 1164

Distance 526.00 pc · percentile 48 / cohort 1171

ESI 0.176 · percentile 8 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.180 days

Semi-major axis

0.0454 AU

Eccentricity

0.100

Inclination

89.05 °

Year Length

A year here lasts approximately 3.18 Earth days (0.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0454 AU.

Transit Fingerprint

Depth

0.012 %

Duration

3.633 h

Impact parameter b

0.110

Rp / R★

0.009730

Transit midpoint (BJD)

2,455,701.0841

Photometric dip

Transit produces a flux drop of 122 ppm lasting ≈ 3.63 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009730

Semi-major axis / stellar radius

2.740

Impact parameter (b)

0.110

RV semi-amplitude (K)

1.440 m/s

Transit mid-time (BJD)

2,455,701.0841

Angular separation (arcsec)

0.08640

Eq. Temperature

1,592K

(1319 °C)

Insolation (S⊕)

1,073.00

Earth = 1.00

Earth Similarity (ESI)

0.176

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

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-107

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,854 K — hotter than the Sun (5,778 K)

Estimated Age

4.29 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.447 R☉

Stellar Mass

1.238 M☉

Metallicity [Fe/H]

0.32

Extended Stellar Properties

Surface gravity (log g)

4.210 dex

Stellar density

0.400 g/cm³

Systemic radial velocity

5.64 km/s

Rotational v·sin i

3.60 km/s

Rotation period

20.30 days

Metallicity ratio

[Fe/H]

Distance

526.00 parsec

Light-years 1,715.57 ly

V-band magnitude

12.54 mag

Voyager-speed travel 30,254,089 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.872 mas

Total Proper Motion

9.486 mas/yr

PM Right Ascension

-9.48 mas/yr

PM Declination

0.32 mas/yr

Galactic Cartesian (pc)

x = 0.303 · y = -0.594 · z = 0.746

Equatorial (J2000)

RA 297.02816° · Dec 48.20860°

Galactic ℓ, b

81.726° · 11.233°

Ecliptic λ, β

320.673° · 66.954°

HTM-20 index

2092807115