Key parameters at a glance

A radius of 1.87 Earth radii
A mass of 4.16 Earth masses
Surface gravity around 1.19 g
An orbital period of 28.166 days
Distance from Earth 519.43 light-years
Earth Similarity Index 0.811
Travel time at Voyager 1 speed 9,160,197 years
Almost certainly tidally locked to its host star given the close orbit

EPIC 201238110 b Planet Profile

Physical Specs

Radius

1.87 R⊕

Radius (Jupiter)

0.167 R♃

Mass

4.16 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.50 g/cm³

Surface Gravity

1.19 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.811

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

#169of 1176

top 14.3%

This planet

1.87R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-824 b 1.87 R⊕ Kepler-299 e 1.87 R⊕ HD 23472 c 1.87 R⊕

Metric	Earth	EPIC 201238110 b	Jupiter
Radius (R⊕)	1.00	1.87	11.21
Mass (M⊕)	1.00	4.16	317.83
Density (g/cm³)	5.51	3.50	1.33
Surface Gravity (g)	1.00	1.19	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 35019000

Gaia DR2

Gaia DR2 3600975145895223040

Gaia DR3

Gaia DR3 3600975145895223040

System

EPIC 201238110

Percentile among Super-Earth cohort

Radius 1.870 R⊕ · percentile 85 / cohort 1176

Mass 4.160 M⊕ · percentile 79 / cohort 1176

Orbital period 28.17 d · percentile 91 / cohort 1164

Distance 159.26 pc · percentile 21 / cohort 1171

ESI 0.811 · percentile 90 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

28.166 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 28.17 Earth days (7.7% of a terrestrial year).

Transit Fingerprint

Depth

0.316 %

Duration

3.360 h

Impact parameter b

0.240

Rp / R★

0.045800

Transit midpoint (BJD)

2,456,852.6572

Photometric dip

Transit produces a flux drop of 3,160 ppm lasting ≈ 3.36 h.

Extended Orbital Architecture

Planet / star radius ratio

0.045800

Semi-major axis / stellar radius

61.500

Impact parameter (b)

0.240

Transit mid-time (BJD)

2,456,852.6572

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.811

0 = alien, 1 = Earth-identical

Insufficient insolation data. Close-orbiting tidally-locked around a cool host.

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: EPIC 201238110

Spectral Class

M-type red dwarf

Effective Temperature

3,587 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.374 R☉

Stellar Mass

0.410 M☉

Metallicity [Fe/H]

—

Distance

159.26 parsec

Light-years 519.43 ly

V-band magnitude

16.01 mag

Voyager-speed travel 9,160,197 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

6.251 mas

Total Proper Motion

28.021 mas/yr

PM Right Ascension

-25.11 mas/yr

PM Declination

-12.44 mas/yr

Galactic Cartesian (pc)

x = -0.998 · y = 0.005 · z = -0.059

Equatorial (J2000)

RA 179.70585° · Dec -3.38946°

Galactic ℓ, b

278.318° · 56.947°

Ecliptic λ, β

181.076° · -3.226°

HTM-20 index

-1647912247