Key parameters at a glance

A radius of 4.73 Earth radii
A mass of 20.10 Earth masses
Surface gravity around 0.90 g
An orbital period of 41.440 days
Semi-major axis 0.2288 AU
Equilibrium temperature 516 K (243 °C)
Distance from Earth 7,509.58 light-years
Earth Similarity Index 0.369
Travel time at Voyager 1 speed 132,431,415 years

Kepler-667 b Planet Profile

Physical Specs

Radius

4.73 R⊕

Radius (Jupiter)

0.422 R♃

Mass

20.10 M⊕

Mass (Jupiter)

0.063 M♃

Density

1.04 g/cm³

Surface Gravity

0.90 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.369

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

#424of 574

top 73.7%

This planet

4.73R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

OGLE-2018-BLG-0516L b 4.73 R⊕ TCP J05074264+2447555 b 4.72 R⊕ LTT 9779 b 4.72 R⊕

Metric	Earth	Kepler-667 b	Jupiter
Radius (R⊕)	1.00	4.73	11.21
Mass (M⊕)	1.00	20.10	317.83
Density (g/cm³)	5.51	1.04	1.33
Surface Gravity (g)	1.00	0.90	2.53
Insolation (S⊕)	1.00	71.82	0.037

Star Catalogue Identifiers

TIC

TIC 27530621

Gaia DR2

Gaia DR2 2134766460297292032

Gaia DR3

Gaia DR3 2134766460297292032

System

Kepler-667

Percentile among Neptune-like cohort

Radius 4.730 R⊕ · percentile 26 / cohort 574

Mass 20.100 M⊕ · percentile 29 / cohort 574

Orbital period 41.44 d · percentile 67 / cohort 524

Distance 2,302.45 pc · percentile 91 / cohort 572

ESI 0.369 · percentile 68 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

41.440 days

Semi-major axis

0.2288 AU

Eccentricity

0.000

Inclination

89.31 °

Year Length

A year here lasts approximately 41.44 Earth days (11.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2288 AU.

Transit Fingerprint

Depth

0.279 %

Duration

10.647 h

Impact parameter b

0.470

Rp / R★

0.050181

Transit midpoint (BJD)

2,455,041.9311

Photometric dip

Transit produces a flux drop of 2,793 ppm lasting ≈ 10.65 h.

Extended Orbital Architecture

Planet / star radius ratio

0.050181

Semi-major axis / stellar radius

27.900

Impact parameter (b)

0.470

Transit mid-time (BJD)

2,455,041.9311

Angular separation (arcsec)

0.09940

Eq. Temperature

516K

(243 °C)

Insolation (S⊕)

71.82

Earth = 1.00

Earth Similarity (ESI)

0.369

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-667

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,327 K — cooler than the Sun (5,778 K)

Estimated Age

4.68 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.870 R☉

Stellar Mass

0.910 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

0.270 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,302.45 parsec

Light-years 7,509.58 ly

V-band magnitude

15.36 mag

Voyager-speed travel 132,431,415 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.405 mas

Total Proper Motion

7.937 mas/yr

PM Right Ascension

-2.84 mas/yr

PM Declination

-7.41 mas/yr

Galactic Cartesian (pc)

x = 0.283 · y = -0.592 · z = 0.755

Equatorial (J2000)

RA 295.55499° · Dec 49.01730°

Galactic ℓ, b

81.993° · 12.471°

Ecliptic λ, β

319.387° · 68.120°

HTM-20 index

1841433432