Key parameters at a glance

A radius of 1.31 Earth radii
A mass of 2.27 Earth masses
Surface gravity around 1.32 g
An orbital period of 8.051 days
Equilibrium temperature 961 K (687 °C)
Distance from Earth 795.61 light-years
Earth Similarity Index 0.324
Travel time at Voyager 1 speed 14,030,558 years

1 sibling around K2-168

EPIC 205950854 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
EPIC 205950854 c this	Super-Earth	1.31	2.27	8.051	961	2019
K2-168 b	Super-Earth	1.86	4.12	15.852	766	2018

EPIC 205950854 c Planet Profile

Physical Specs

Radius

1.31 R⊕

Radius (Jupiter)

0.117 R♃

Mass

2.27 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.55 g/cm³

Surface Gravity

1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.324

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1072of 1176

top 91.1%

This planet

1.31R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-374 d 1.31 R⊕ Kepler-1298 b 1.31 R⊕ Kepler-62 b 1.31 R⊕

Metric	Earth	EPIC 205950854 c	Jupiter
Radius (R⊕)	1.00	1.31	11.21
Mass (M⊕)	1.00	2.27	317.83
Density (g/cm³)	5.51	5.55	1.33
Surface Gravity (g)	1.00	1.32	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 437695245

Gaia DR2

Gaia DR2 6826271727199243264

Gaia DR3

Gaia DR3 6826271727199243264

System

K2-168

Percentile among Super-Earth cohort

Radius 1.310 R⊕ · percentile 8 / cohort 1176

Mass 2.270 M⊕ · percentile 8 / cohort 1176

Orbital period 8.05 d · percentile 57 / cohort 1164

Distance 243.94 pc · percentile 27 / cohort 1171

ESI 0.324 · percentile 43 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

8.051 days

Semi-major axis

— AU

Eccentricity

—

Inclination

89.81 °

Year Length

A year here lasts approximately 8.05 Earth days (2.2% of a terrestrial year).

Transit Fingerprint

Depth

0.030 %

Duration

3.720 h

Impact parameter b

0.064

Rp / R★

0.012580

Transit midpoint (BJD)

2,456,973.7648

Photometric dip

Transit produces a flux drop of 303 ppm lasting ≈ 3.72 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012580

Semi-major axis / stellar radius

16.180

Impact parameter (b)

0.064

Transit mid-time (BJD)

2,456,973.7648

Eq. Temperature

961K

(687 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.324

0 = alien, 1 = Earth-identical

Insufficient insolation data — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Heller et al. 2019

Instrument

Kepler CCD Array

Publication

2019-07

Observation locale

Space

Discovery cohort

Planets confirmed in 2019 at K2 (12 shown).

EPIC 206032309 b · Rocky Terrestrial EPIC 201833600 c · Rocky Terrestrial EPIC 206215704 b · Rocky Terrestrial EPIC 201754305 d · Rocky Terrestrial EPIC 201841433 b · Rocky Terrestrial EPIC 206317286 b · Rocky Terrestrial EPIC 201615463 c · Rocky Terrestrial EPIC 212499991 b · Super-Earth EPIC 220554210 c · Super-Earth EPIC 201497682 b · Rocky Terrestrial K2-133 e · Super-Earth EPIC 206024342 b · Super-Earth

Host System: K2-168

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,503 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.830 R☉

Stellar Mass

0.877 M☉

Metallicity [Fe/H]

-0.13

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

1.270 g/cm³

Systemic radial velocity

-10.09 km/s

Metallicity ratio

[Fe/H]

Distance

243.94 parsec

Light-years 795.61 ly

V-band magnitude

12.37 mag

Voyager-speed travel 14,030,558 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

4.072 mas

Total Proper Motion

47.271 mas/yr

PM Right Ascension

36.80 mas/yr

PM Declination

-29.67 mas/yr

Galactic Cartesian (pc)

x = 0.856 · y = -0.434 · z = -0.281

Equatorial (J2000)

RA 333.11007° · Dec -16.34189°

Galactic ℓ, b

40.911° · -51.713°

Ecliptic λ, β

329.200° · -4.906°

HTM-20 index

-1533279856