Key parameters at a glance

A radius of 1.92 Earth radii
A mass of 4.35 Earth masses
Surface gravity around 1.18 g
An orbital period of 8.235 days
Equilibrium temperature 885 K (612 °C)
Distance from Earth 574.20 light-years
Earth Similarity Index 0.314
Travel time at Voyager 1 speed 10,126,032 years

2 siblings around K2-352

K2-352 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
K2-352 b	Super-Earth	1.37	2.45	3.666	1,160	2021
K2-352 c this	Super-Earth	1.92	4.35	8.235	885	2021
K2-352 d	Sub-Neptune	2.23	5.60	14.871	727	2021

K2-352 c Planet Profile

Physical Specs

Radius

1.92 R⊕

Radius (Jupiter)

0.171 R♃

Mass

4.35 M⊕

Mass (Jupiter)

0.014 M♃

Density

3.38 g/cm³

Surface Gravity

1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.314

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

#102of 1176

top 8.6%

This planet

1.92R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

K2-61 b 1.92 R⊕ Kepler-1119 b 1.92 R⊕ HD 3167 d 1.92 R⊕

Metric	Earth	K2-352 c	Jupiter
Radius (R⊕)	1.00	1.92	11.21
Mass (M⊕)	1.00	4.35	317.83
Density (g/cm³)	5.51	3.38	1.33
Surface Gravity (g)	1.00	1.18	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 86130229

Gaia DR2

Gaia DR2 632634358985725184

Gaia DR3

Gaia DR3 632634358985725184

System

K2-352

Percentile among Super-Earth cohort

Radius 1.920 R⊕ · percentile 90 / cohort 1176

Mass 4.350 M⊕ · percentile 84 / cohort 1176

Orbital period 8.23 d · percentile 58 / cohort 1164

Distance 176.05 pc · percentile 22 / cohort 1171

ESI 0.314 · percentile 40 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

8.235 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 8.23 Earth days (2.3% of a terrestrial year).

Transit Fingerprint

Depth

0.040 %

Duration

3.590 h

Impact parameter b

0.410

Rp / R★

0.018500

Transit midpoint (BJD)

2,458,098.7169

Photometric dip

Transit produces a flux drop of 401 ppm lasting ≈ 3.59 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018500

Semi-major axis / stellar radius

16.350

Impact parameter (b)

0.410

Transit mid-time (BJD)

2,458,098.7169

Eq. Temperature

885K

(612 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.314

0 = alien, 1 = Earth-identical

Insufficient insolation data — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

De Leon 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 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

Host System: K2-352

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,791 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.950 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

1.778 g/cm³

Rotation period

17.59 days

Metallicity ratio

[Fe/H]

Distance

176.05 parsec

Light-years 574.20 ly

V-band magnitude

11.13 mag

Voyager-speed travel 10,126,032 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

5.652 mas

Total Proper Motion

21.493 mas/yr

PM Right Ascension

-7.24 mas/yr

PM Declination

20.24 mas/yr

Galactic Cartesian (pc)

x = -0.731 · y = 0.604 · z = 0.317

Equatorial (J2000)

RA 140.44515° · Dec 18.46963°

Galactic ℓ, b

211.549° · 41.250°

Ecliptic λ, β

137.070° · 2.889°

HTM-20 index

-2103810399