Key parameters at a glance

A radius of 2.90 Earth radii
A mass of 8.75 Earth masses
Surface gravity around 1.04 g
An orbital period of 23.675 days
Semi-major axis 0.1536 AU
Equilibrium temperature 528 K (255 °C)
Distance from Earth 2,021.26 light-years
Earth Similarity Index 0.446
Travel time at Voyager 1 speed 35,644,984 years

Kepler-600 b Planet Profile

Physical Specs

Radius

2.90 R⊕

Radius (Jupiter)

0.259 R♃

Mass

8.75 M⊕

Mass (Jupiter)

0.028 M♃

Density

1.97 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.446

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

#621of 1978

top 31.3%

This planet

2.90R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-130 c 2.90 R⊕ Kepler-276 c 2.90 R⊕ Kepler-314 c 2.90 R⊕

Metric	Earth	Kepler-600 b	Jupiter
Radius (R⊕)	1.00	2.90	11.21
Mass (M⊕)	1.00	8.75	317.83
Density (g/cm³)	5.51	1.97	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	20.18	0.037

Star Catalogue Identifiers

TIC

TIC 164646661

Gaia DR2

Gaia DR2 2104875377699739648

Gaia DR3

Gaia DR3 2104875377699739648

System

Kepler-600

Percentile among Sub-Neptune cohort

Radius 2.900 R⊕ · percentile 68 / cohort 1978

Mass 8.750 M⊕ · percentile 62 / cohort 1978

Orbital period 23.68 d · percentile 67 / cohort 1946

Distance 619.72 pc · percentile 54 / cohort 1975

ESI 0.446 · percentile 61 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

23.675 days

Semi-major axis

0.1536 AU

Eccentricity

0.000

Inclination

88.06 °

Year Length

A year here lasts approximately 23.68 Earth days (6.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1536 AU.

Transit Fingerprint

Depth

0.102 %

Duration

4.612 h

Impact parameter b

0.858

Rp / R★

0.032906

Transit midpoint (BJD)

2,455,012.2760

Photometric dip

Transit produces a flux drop of 1,020 ppm lasting ≈ 4.61 h.

Extended Orbital Architecture

Planet / star radius ratio

0.032906

Semi-major axis / stellar radius

22.300

Impact parameter (b)

0.858

Transit mid-time (BJD)

2,455,012.2760

Angular separation (arcsec)

0.24800

Eq. Temperature

528K

(255 °C)

Insolation (S⊕)

20.18

Earth = 1.00

Earth Similarity (ESI)

0.446

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-600

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,279 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.810 R☉

Stellar Mass

0.840 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

0.521 g/cm³

Metallicity ratio

[Fe/H]

Distance

619.72 parsec

Light-years 2,021.26 ly

V-band magnitude

14.85 mag

Voyager-speed travel 35,644,984 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.585 mas

Total Proper Motion

0.896 mas/yr

PM Right Ascension

0.87 mas/yr

PM Declination

-0.22 mas/yr

Galactic Cartesian (pc)

x = 0.178 · y = -0.722 · z = 0.669

Equatorial (J2000)

RA 283.83306° · Dec 41.97864°

Galactic ℓ, b

71.891° · 17.082°

Ecliptic λ, β

294.157° · 64.262°

HTM-20 index

1609719540