Key parameters at a glance

A radius of 2.17 Earth radii
A mass of 5.35 Earth masses
Surface gravity around 1.14 g
An orbital period of 18.098 days
Distance from Earth 1,995.44 light-years
Earth Similarity Index 0.756
Travel time at Voyager 1 speed 35,189,502 years

EPIC 212424622 b Planet Profile

Physical Specs

Radius

2.17 R⊕

Radius (Jupiter)

0.194 R♃

Mass

5.35 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.88 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.756

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

#1720of 1978

top 86.9%

This planet

2.17R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1329 b 2.17 R⊕ Kepler-797 b 2.17 R⊕ Kepler-304 c 2.17 R⊕

Metric	Earth	EPIC 212424622 b	Jupiter
Radius (R⊕)	1.00	2.17	11.21
Mass (M⊕)	1.00	5.35	317.83
Density (g/cm³)	5.51	2.88	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 297146115

Gaia DR2

Gaia DR2 3608139421926380544

Gaia DR3

Gaia DR3 3608139421926380544

System

EPIC 212424622

Percentile among Sub-Neptune cohort

Radius 2.170 R⊕ · percentile 13 / cohort 1978

Mass 5.350 M⊕ · percentile 13 / cohort 1978

Orbital period 18.10 d · percentile 58 / cohort 1946

Distance 611.80 pc · percentile 54 / cohort 1975

ESI 0.756 · percentile 97 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

18.098 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 18.10 Earth days (5.0% of a terrestrial year).

Transit Fingerprint

Depth

0.030 %

Duration

4.320 h

Impact parameter b

0.740

Rp / R★

0.014800

Transit midpoint (BJD)

2,457,263.2616

Photometric dip

Transit produces a flux drop of 298 ppm lasting ≈ 4.32 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014800

Semi-major axis / stellar radius

27.900

Impact parameter (b)

0.740

Transit mid-time (BJD)

2,457,263.2616

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.756

0 = alien, 1 = Earth-identical

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 212424622

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,782 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.225 R☉

Stellar Mass

1.106 M☉

Metallicity [Fe/H]

—

Distance

611.80 parsec

Light-years 1,995.44 ly

V-band magnitude

13.44 mag

Voyager-speed travel 35,189,502 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

1.606 mas

Total Proper Motion

12.711 mas/yr

PM Right Ascension

-12.22 mas/yr

PM Declination

3.50 mas/yr

Galactic Cartesian (pc)

x = -0.896 · y = -0.368 · z = -0.248

Equatorial (J2000)

RA 202.33138° · Dec -14.35944°

Galactic ℓ, b

316.583° · 47.506°

Ecliptic λ, β

205.960° · -4.653°

HTM-20 index

557486829