Key parameters at a glance

A radius of 0.99 Earth radii
A mass of 0.94 Earth masses
Surface gravity around 0.96 g
An orbital period of 0.762 days
Distance from Earth 2,036.88 light-years
Earth Similarity Index 0.989
Travel time at Voyager 1 speed 35,920,436 years

EPIC 220492298 b Planet Profile

Physical Specs

Radius

0.99 R⊕

Radius (Jupiter)

0.088 R♃

Mass

0.94 M⊕

Mass (Jupiter)

0.003 M♃

Density

5.31 g/cm³

Surface Gravity

0.96 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.989

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#346of 570

top 60.5%

This planet

0.99R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

TOI-5388.01 0.99 R⊕ Kepler-381 b 0.99 R⊕ Kepler-969 c 0.99 R⊕

Metric	Earth	EPIC 220492298 b	Jupiter
Radius (R⊕)	1.00	0.99	11.21
Mass (M⊕)	1.00	0.94	317.83
Density (g/cm³)	5.51	5.31	1.33
Surface Gravity (g)	1.00	0.96	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 257802602

Gaia DR2

Gaia DR2 2576563907506735232

Gaia DR3

Gaia DR3 2576563907506735232

System

EPIC 220492298

Percentile among Rocky Terrestrial cohort

Radius 0.990 R⊕ · percentile 38 / cohort 570

Mass 0.937 M⊕ · percentile 34 / cohort 570

Orbital period 0.76 d · percentile 7 / cohort 567

Distance 624.51 pc · percentile 75 / cohort 566

ESI 0.989 · percentile 98 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.762 days

Semi-major axis

— AU

Eccentricity

—

Inclination

92.60 °

Year Length

A year here lasts roughly 18.3 hours long.

Transit Fingerprint

Rp / R★

0.010000

Transit midpoint (BJD)

2,457,431.6773

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.989

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Adams et al. 2021

Instrument

Kepler CCD Array

Publication

2021-08

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at K2 (12 shown).

EPIC 206042996 c · Rocky Terrestrial EPIC 212624936 b · Rocky Terrestrial EPIC 206024342 c · Super-Earth EPIC 201427007 b · Super-Earth K2-332 b · Sub-Neptune EPIC 212624936 c · Sub-Neptune EPIC 206024342 d · Sub-Neptune K2-345 b · Sub-Neptune K2-349 b · Super-Earth K2-343 c · Sub-Neptune K2-346 b · Sub-Neptune K2-336 b · Rocky Terrestrial

Host System: EPIC 220492298

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,620 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.890 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.28

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

0.971 g/cm³

Metallicity ratio

[Fe/H]

Distance

624.51 parsec

Light-years 2,036.88 ly

V-band magnitude

13.99 mag

Voyager-speed travel 35,920,436 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.572 mas

Total Proper Motion

16.054 mas/yr

PM Right Ascension

14.52 mas/yr

PM Declination

-6.84 mas/yr

Galactic Cartesian (pc)

x = 0.951 · y = 0.286 · z = 0.115

Equatorial (J2000)

RA 16.76150° · Dec 6.58880°

Galactic ℓ, b

129.888° · -56.072°

Ecliptic λ, β

17.965° · -0.497°

HTM-20 index

1297827960