Key parameters at a glance

A radius of 1.24 Earth radii
A mass of 2.06 Earth masses
Surface gravity around 1.34 g
An orbital period of 21.804 days
Semi-major axis 0.1404 AU
Equilibrium temperature 538 K (265 °C)
Distance from Earth 1,115.15 light-years
Earth Similarity Index 0.575
Travel time at Voyager 1 speed 19,665,730 years
Almost certainly tidally locked to its host star given the close orbit

Context from the literature

Kepler-167 is a K-type main-sequence star located about 1,119 light-years (343 pc) away from the Solar System in the constellation of Cygnus. The star has about 78% the mass and 75% the radius of the Sun, and a temperature of 4,884 K. It hosts a system of four known exoplanets. There is also a companion red dwarf star at a separation of about 700 AU, with an estimated orbital period of over 15,000 years.

Excerpted from Wikipedia · full article

3 siblings around Kepler-167

Kepler-167 d 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-167 b	Super-Earth	1.72	3.60	4.393	918	2014
Kepler-167 c	Super-Earth	1.67	3.44	7.406	771	2014
Kepler-167 d this	Rocky Terrestrial	1.24	2.06	21.804	538	2016
Kepler-167 e	Gas Giant	10.16	321.01	1,071.232	134	2016

Kepler-167 d Planet Profile

Physical Specs

Radius

1.24 R⊕

Radius (Jupiter)

0.110 R♃

Mass

2.06 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.97 g/cm³

Surface Gravity

1.34 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.575

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

#15of 570

top 2.5%

This planet

1.24R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1952 b 1.24 R⊕ Kepler-373 c 1.24 R⊕ Kepler-354 d 1.24 R⊕

Metric	Earth	Kepler-167 d	Jupiter
Radius (R⊕)	1.00	1.24	11.21
Mass (M⊕)	1.00	2.06	317.83
Density (g/cm³)	5.51	5.97	1.33
Surface Gravity (g)	1.00	1.34	2.53
Insolation (S⊕)	1.00	14.49	0.037

Star Catalogue Identifiers

TIC

TIC 137686948

Gaia DR2

Gaia DR2 2051933102555095936

Gaia DR3

Gaia DR3 2051933102555095936

System

Kepler-167

Percentile among Rocky Terrestrial cohort

Radius 1.238 R⊕ · percentile 97 / cohort 570

Mass 2.060 M⊕ · percentile 89 / cohort 570

Orbital period 21.80 d · percentile 93 / cohort 567

Distance 341.91 pc · percentile 46 / cohort 566

ESI 0.575 · percentile 76 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

21.804 days

Semi-major axis

0.1404 AU

Eccentricity

0.000

Inclination

89.26 °

Year Length

A year here lasts approximately 21.80 Earth days (6.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1404 AU.

Transit Fingerprint

Depth

0.023 %

Duration

3.582 h

Impact parameter b

0.520

Rp / R★

0.015070

Transit midpoint (BJD)

2,455,669.7888

Photometric dip

Transit produces a flux drop of 229 ppm lasting ≈ 3.58 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015070

Semi-major axis / stellar radius

28.760

Impact parameter (b)

0.520

Transit mid-time (BJD)

2,455,669.7888

Angular separation (arcsec)

0.41100

Eq. Temperature

538K

(265 °C)

Insolation (S⊕)

14.49

Earth = 1.00

Earth Similarity (ESI)

0.575

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

Kipping et al. 2016

Instrument

Kepler CCD Array

Publication

2016-04

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-167

Spectral Class

K-type orange

Effective Temperature

4,884 K — cooler than the Sun (5,778 K)

Estimated Age

7.10 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.749 R☉

Stellar Mass

0.777 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.579 dex

Stellar density

2.600 g/cm³

Systemic radial velocity

-29.30 km/s

Rotational v·sin i

2.00 km/s

Metallicity ratio

[Fe/H]

Distance

341.91 parsec

Light-years 1,115.15 ly

V-band magnitude

14.28 mag

Voyager-speed travel 19,665,730 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.896 mas

Total Proper Motion

39.394 mas/yr

PM Right Ascension

15.08 mas/yr

PM Declination

36.39 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.724 · z = 0.620

Equatorial (J2000)

RA 292.65853° · Dec 38.34556°

Galactic ℓ, b

71.353° · 9.445°

Ecliptic λ, β

305.905° · 58.992°

HTM-20 index

1333285160

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