Key parameters at a glance

A radius of 1.01 Earth radii
A mass of 3.30 Earth masses
Surface gravity around 3.24 g
An orbital period of 12.386 days
Semi-major axis 0.0983 AU
Equilibrium temperature 679 K (406 °C)
Distance from Earth 2,097.21 light-years
Earth Similarity Index 0.443
Travel time at Voyager 1 speed 36,984,339 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around Kepler-595

Kepler-595 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-595 c this	Rocky Terrestrial	1.01	3.30	12.386	679	2020
Kepler-595 b	Sub-Neptune	3.71	17.40	25.303	535	2016

Kepler-595 c Planet Profile

Physical Specs

Radius

1.01 R⊕

Radius (Jupiter)

0.090 R♃

Mass

3.30 M⊕

Mass (Jupiter)

0.010 M♃

Density

6.90 g/cm³

Surface Gravity

3.24 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.443

HZ Position Inner

Controversial No

Discovery

Year 2020

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#334of 570

top 58.4%

This planet

1.01R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-282 b 1.01 R⊕ Kepler-398 c 1.01 R⊕ Kepler-1278 b 1.01 R⊕

Metric	Earth	Kepler-595 c	Jupiter
Radius (R⊕)	1.00	1.01	11.21
Mass (M⊕)	1.00	3.30	317.83
Density (g/cm³)	5.51	6.90	1.33
Surface Gravity (g)	1.00	3.24	2.53
Insolation (S⊕)	1.00	50.23	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	3.300 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 27231753

Gaia DR2

Gaia DR2 2135237601028549888

Gaia DR3

Gaia DR3 2135237601028549888

System

Kepler-595

Percentile among Rocky Terrestrial cohort

Radius 1.009 R⊕ · percentile 41 / cohort 570

Mass 3.300 M⊕ · percentile 93 / cohort 570

Orbital period 12.39 d · percentile 84 / cohort 567

Distance 643.01 pc · percentile 76 / cohort 566

ESI 0.443 · percentile 65 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

12.386 days

Semi-major axis

0.0983 AU

Eccentricity

0.000

Inclination

89.01 °

Year Length

A year here lasts approximately 12.39 Earth days (3.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0983 AU.

Transit Fingerprint

Depth

0.015 %

Duration

2.604 h

Impact parameter b

0.540

Rp / R★

0.011472

Transit midpoint (BJD)

2,454,965.8175

Photometric dip

Transit produces a flux drop of 151 ppm lasting ≈ 2.60 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011472

Semi-major axis / stellar radius

27.783

Impact parameter (b)

0.540

Transit mid-time (BJD)

2,454,965.8175

Angular separation (arcsec)

0.15300

Eq. Temperature

679K

(406 °C)

Insolation (S⊕)

50.23

Earth = 1.00

Earth Similarity (ESI)

0.443

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Yoffe et al. 2021

Instrument

Kepler CCD Array

Publication

2021-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2020 at Kepler (12 shown).

Kepler-1649 c · Rocky Terrestrial Kepler-1701 b · Sub-Neptune Kepler-1690 b · Sub-Neptune Kepler-1700 b · Sub-Neptune Kepler-1684 b · Sub-Neptune Kepler-1678 b · Sub-Neptune Kepler-598 c · Sub-Neptune Kepler-1661 b · Sub-Neptune Kepler-1663 b · Sub-Neptune Kepler-1681 b · Sub-Neptune Kepler-1672 b · Sub-Neptune Kepler-1702 b · Super-Earth

Host System: Kepler-595

Spectral Class

K-type orange

Effective Temperature

5,139 K — cooler than the Sun (5,778 K)

Estimated Age

2.70 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.821 R☉

Stellar Mass

0.930 M☉

Metallicity [Fe/H]

0.41

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

2.608 g/cm³

Metallicity ratio

[M/H]

Distance

643.01 parsec

Light-years 2,097.21 ly

V-band magnitude

15.07 mag

Voyager-speed travel 36,984,339 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.526 mas

Total Proper Motion

1.444 mas/yr

PM Right Ascension

-1.36 mas/yr

PM Declination

-0.50 mas/yr

Galactic Cartesian (pc)

x = 0.264 · y = -0.576 · z = 0.774

Equatorial (J2000)

RA 294.57036° · Dec 50.67301°

Galactic ℓ, b

83.218° · 13.783°

Ecliptic λ, β

319.998° · 69.880°

HTM-20 index

393631996