Key parameters at a glance

A radius of 2.37 Earth radii
A mass of 6.21 Earth masses
Surface gravity around 1.11 g
An orbital period of 13.024 days
Semi-major axis 0.1092 AU
Equilibrium temperature 743 K (470 °C)
Distance from Earth 2,163.78 light-years
Earth Similarity Index 0.348
Travel time at Voyager 1 speed 38,158,216 years

Kepler-597 b Planet Profile

Physical Specs

Radius

2.37 R⊕

Radius (Jupiter)

0.211 R♃

Mass

6.21 M⊕

Mass (Jupiter)

0.020 M♃

Density

2.56 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.348

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

#1375of 1978

top 69.5%

This planet

2.37R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-81 c 2.37 R⊕ K2-18 b 2.37 R⊕ Kepler-125 b 2.37 R⊕

Metric	Earth	Kepler-597 b	Jupiter
Radius (R⊕)	1.00	2.37	11.21
Mass (M⊕)	1.00	6.21	317.83
Density (g/cm³)	5.51	2.56	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	76.38	0.037

Star Catalogue Identifiers

TIC

TIC 138214174

Gaia DR2

Gaia DR2 2052450079180319744

Gaia DR3

Gaia DR3 2052450079180319744

System

Kepler-597

Percentile among Sub-Neptune cohort

Radius 2.370 R⊕ · percentile 30 / cohort 1978

Mass 6.210 M⊕ · percentile 29 / cohort 1978

Orbital period 13.02 d · percentile 44 / cohort 1946

Distance 663.42 pc · percentile 57 / cohort 1975

ESI 0.348 · percentile 40 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.024 days

Semi-major axis

0.1092 AU

Eccentricity

0.000

Inclination

89.93 °

Year Length

A year here lasts approximately 13.02 Earth days (3.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1092 AU.

Transit Fingerprint

Depth

0.062 %

Duration

3.971 h

Impact parameter b

0.883

Rp / R★

0.023399

Transit midpoint (BJD)

2,455,011.5241

Photometric dip

Transit produces a flux drop of 622 ppm lasting ≈ 3.97 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023399

Semi-major axis / stellar radius

25.592

Impact parameter (b)

0.883

Transit mid-time (BJD)

2,455,011.5241

Angular separation (arcsec)

0.16500

Eq. Temperature

743K

(470 °C)

Insolation (S⊕)

76.38

Earth = 1.00

Earth Similarity (ESI)

0.348

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

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-597

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,683 K — cooler than the Sun (5,778 K)

Estimated Age

4.27 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.950 R☉

Stellar Mass

0.970 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

1.240 g/cm³

Metallicity ratio

[Fe/H]

Distance

663.42 parsec

Light-years 2,163.78 ly

V-band magnitude

14.12 mag

Voyager-speed travel 38,158,216 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.479 mas

Total Proper Motion

3.690 mas/yr

PM Right Ascension

-0.73 mas/yr

PM Declination

3.62 mas/yr

Galactic Cartesian (pc)

x = 0.308 · y = -0.710 · z = 0.633

Equatorial (J2000)

RA 293.47009° · Dec 39.25282°

Galactic ℓ, b

72.465° · 9.301°

Ecliptic λ, β

307.629° · 59.663°

HTM-20 index

1250415423