Key parameters at a glance

A radius of 3.21 Earth radii
A mass of 10.40 Earth masses
Surface gravity around 1.01 g
An orbital period of 36.553 days
Equilibrium temperature 598 K (325 °C)
Distance from Earth 1,374.45 light-years
Earth Similarity Index 0.382
Travel time at Voyager 1 speed 24,238,380 years

K2-341 b Planet Profile

Physical Specs

Radius

3.21 R⊕

Radius (Jupiter)

0.286 R♃

Mass

10.40 M⊕

Mass (Jupiter)

0.033 M♃

Density

1.73 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.382

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

#339of 1978

top 17.1%

This planet

3.21R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-782 b 3.21 R⊕ TOI-4155 b 3.21 R⊕ MOA-2009-BLG-266L b 3.21 R⊕

Metric	Earth	K2-341 b	Jupiter
Radius (R⊕)	1.00	3.21	11.21
Mass (M⊕)	1.00	10.40	317.83
Density (g/cm³)	5.51	1.73	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 175290685

Gaia DR2

Gaia DR2 661398407803108736

Gaia DR3

Gaia DR3 661398407803108736

System

K2-341

Percentile among Sub-Neptune cohort

Radius 3.210 R⊕ · percentile 83 / cohort 1978

Mass 10.400 M⊕ · percentile 76 / cohort 1978

Orbital period 36.55 d · percentile 78 / cohort 1946

Distance 421.41 pc · percentile 42 / cohort 1975

ESI 0.382 · percentile 49 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

36.553 days

Semi-major axis

— AU

Eccentricity

—

Inclination

89.32 °

Year Length

A year here lasts approximately 36.55 Earth days (10.0% of a terrestrial year).

Transit Fingerprint

Depth

0.080 %

Duration

6.250 h

Impact parameter b

0.410

Rp / R★

0.025100

Transit midpoint (BJD)

2,457,152.7087

Photometric dip

Transit produces a flux drop of 802 ppm lasting ≈ 6.25 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025100

Semi-major axis / stellar radius

42.130

Impact parameter (b)

0.410

Transit mid-time (BJD)

2,457,152.7087

Eq. Temperature

598K

(325 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.382

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: K2-341

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,817 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.160 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.300 dex

Stellar density

1.055 g/cm³

Metallicity ratio

[Fe/H]

Distance

421.41 parsec

Light-years 1,374.45 ly

V-band magnitude

12.73 mag

Voyager-speed travel 24,238,380 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

2.345 mas

Total Proper Motion

15.096 mas/yr

PM Right Ascension

-14.25 mas/yr

PM Declination

4.98 mas/yr

Galactic Cartesian (pc)

x = -0.611 · y = 0.715 · z = 0.341

Equatorial (J2000)

RA 130.49720° · Dec 19.91664°

Galactic ℓ, b

205.794° · 32.921°

Ecliptic λ, β

127.644° · 1.613°

HTM-20 index

-1890223367