Key parameters at a glance

A radius of 0.69 Earth radii
A mass of 0.26 Earth masses
Surface gravity around 0.54 g
An orbital period of 2.132 days
Distance from Earth 825.26 light-years
Earth Similarity Index 0.862
Travel time at Voyager 1 speed 14,553,450 years
Almost certainly tidally locked to its host star given the close orbit

EPIC 201497682 b Planet Profile

Physical Specs

Radius

0.69 R⊕

Radius (Jupiter)

0.062 R♃

Mass

0.26 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.31 g/cm³

Surface Gravity

0.54 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.862

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

#531of 570

top 93.0%

This planet

0.69R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Proxima Cen d 0.69 R⊕ Kepler-141 b 0.69 R⊕ K2-116 b 0.69 R⊕

Metric	Earth	EPIC 201497682 b	Jupiter
Radius (R⊕)	1.00	0.69	11.21
Mass (M⊕)	1.00	0.26	317.83
Density (g/cm³)	5.51	4.31	1.33
Surface Gravity (g)	1.00	0.54	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 301610040

Gaia DR2

Gaia DR2 3810098271767907840

Gaia DR3

Gaia DR3 3810098271767907840

System

EPIC 201497682

Percentile among Rocky Terrestrial cohort

Radius 0.692 R⊕ · percentile 7 / cohort 570

Mass 0.260 M⊕ · percentile 5 / cohort 570

Orbital period 2.13 d · percentile 24 / cohort 567

Distance 253.03 pc · percentile 36 / cohort 566

ESI 0.862 · percentile 89 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.132 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 2.13 Earth days (0.6% of a terrestrial year).

Transit Fingerprint

Impact parameter b

0.210

Rp / R★

0.011500

Transit midpoint (BJD)

2,456,850.0263

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.862

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 K2-133 e · Super-Earth EPIC 206024342 b · Super-Earth EPIC 206042996 b · Super-Earth

Host System: EPIC 201497682

Spectral Class

K-type orange

Effective Temperature

4,991 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.554 R☉

Stellar Mass

0.780 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.634 dex

Stellar density

3.229 g/cm³

Metallicity ratio

[M/H]

Distance

253.03 parsec

Light-years 825.26 ly

V-band magnitude

13.95 mag

Voyager-speed travel 14,553,450 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

3.923 mas

Total Proper Motion

16.408 mas/yr

PM Right Ascension

11.15 mas/yr

PM Declination

-12.04 mas/yr

Galactic Cartesian (pc)

x = -0.981 · y = 0.192 · z = 0.009

Equatorial (J2000)

RA 168.93668° · Dec 0.48806°

Galactic ℓ, b

258.194° · 54.824°

Ecliptic λ, β

169.634° · -3.929°

HTM-20 index

65358957