Key parameters at a glance

A radius of 1.20 Earth radii
A mass of 1.87 Earth masses
Surface gravity around 1.30 g
An orbital period of 0.355 days
Distance from Earth 1,473.47 light-years
Earth Similarity Index 0.942
Travel time at Voyager 1 speed 25,984,672 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around EPIC 206042996

EPIC 206042996 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 206042996 c this	Rocky Terrestrial	1.20	1.87	0.355	—	2021
EPIC 206042996 b	Super-Earth	1.70	3.53	5.299	—	2019

EPIC 206042996 c Planet Profile

Physical Specs

Radius

1.20 R⊕

Radius (Jupiter)

0.107 R♃

Mass

1.87 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.95 g/cm³

Surface Gravity

1.30 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.942

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

#75of 570

top 13.0%

This planet

1.20R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-225 b 1.20 R⊕ Kepler-282 c 1.20 R⊕ Kepler-367 c 1.20 R⊕

Metric	Earth	EPIC 206042996 c	Jupiter
Radius (R⊕)	1.00	1.20	11.21
Mass (M⊕)	1.00	1.87	317.83
Density (g/cm³)	5.51	5.95	1.33
Surface Gravity (g)	1.00	1.30	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 12785571

Gaia DR2

Gaia DR2 2600942622915012608

Gaia DR3

Gaia DR3 2600942622915012608

System

EPIC 206042996

Percentile among Rocky Terrestrial cohort

Radius 1.200 R⊕ · percentile 84 / cohort 570

Mass 1.870 M⊕ · percentile 77 / cohort 570

Orbital period 0.35 d · percentile 1 / cohort 567

Distance 451.77 pc · percentile 59 / cohort 566

ESI 0.942 · percentile 93 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.355 days

Semi-major axis

— AU

Eccentricity

—

Inclination

89.90 °

Year Length

A year here lasts roughly 8.5 hours long.

Transit Fingerprint

Depth

0.055 %

Duration

1.070 h

Impact parameter b

0.250

Rp / R★

0.022300

Transit midpoint (BJD)

2,457,007.0683

Photometric dip

Transit produces a flux drop of 553 ppm lasting ≈ 1.07 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022300

Semi-major axis / stellar radius

2.600

Impact parameter (b)

0.250

Transit mid-time (BJD)

2,457,007.0683

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.942

0 = alien, 1 = Earth-identical

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

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 220492298 b · 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 206042996

Spectral Class

K-type orange

Effective Temperature

4,114 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.500 R☉

Stellar Mass

0.565 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.800 dex

Stellar density

2.905 g/cm³

Metallicity ratio

[Fe/H]

Distance

451.77 parsec

Light-years 1,473.47 ly

V-band magnitude

16.59 mag

Voyager-speed travel 25,984,672 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

2.187 mas

Total Proper Motion

10.415 mas/yr

PM Right Ascension

7.30 mas/yr

PM Declination

-7.43 mas/yr

Galactic Cartesian (pc)

x = 0.898 · y = -0.372 · z = -0.235

Equatorial (J2000)

RA 337.51362° · Dec -13.61015°

Galactic ℓ, b

48.065° · -54.376°

Ecliptic λ, β

334.169° · -3.901°

HTM-20 index

451933986