Key parameters at a glance

A radius of 2.21 Earth radii
A mass of 5.53 Earth masses
Surface gravity around 1.13 g
An orbital period of 16.434 days
Distance from Earth 1,172.33 light-years
Earth Similarity Index 0.748
Travel time at Voyager 1 speed 20,674,071 years

1 sibling around K2-374

K2-374 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
K2-374 b	Super-Earth	1.59	3.16	4.522	—	2022
K2-374 c this	Sub-Neptune	2.21	5.53	16.434	—	2022

K2-374 c Planet Profile

Physical Specs

Radius

2.21 R⊕

Radius (Jupiter)

0.197 R♃

Mass

5.53 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.80 g/cm³

Surface Gravity

1.13 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.748

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1655of 1978

top 83.6%

This planet

2.21R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1655 b 2.21 R⊕ Kepler-1874 b 2.21 R⊕ Kepler-538 b 2.22 R⊕

Metric	Earth	K2-374 c	Jupiter
Radius (R⊕)	1.00	2.21	11.21
Mass (M⊕)	1.00	5.53	317.83
Density (g/cm³)	5.51	2.80	1.33
Surface Gravity (g)	1.00	1.13	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 321285788

Gaia DR2

Gaia DR2 607937055787752576

Gaia DR3

Gaia DR3 607937055787752576

System

K2-374

Percentile among Sub-Neptune cohort

Radius 2.213 R⊕ · percentile 16 / cohort 1978

Mass 5.530 M⊕ · percentile 16 / cohort 1978

Orbital period 16.43 d · percentile 55 / cohort 1946

Distance 359.44 pc · percentile 39 / cohort 1975

ESI 0.748 · percentile 97 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

16.434 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 16.43 Earth days (4.5% of a terrestrial year).

Transit Fingerprint

Duration

3.600 h

Impact parameter b

0.649

Rp / R★

0.022300

Transit midpoint (BJD)

2,458,109.2376

Extended Orbital Architecture

Planet / star radius ratio

0.022300

Semi-major axis / stellar radius

27.110

Impact parameter (b)

0.649

Transit mid-time (BJD)

2,458,109.2376

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.748

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Christiansen et al. 2022

Instrument

Kepler CCD Array

Publication

2022-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2022 at K2 (12 shown).

K2-411 b · Rocky Terrestrial K2-381 b · Rocky Terrestrial K2-384 b · Rocky Terrestrial K2-400 b · Rocky Terrestrial K2-384 c · Rocky Terrestrial K2-369 b · Super-Earth K2-407 b · Super-Earth K2-414 b · Rocky Terrestrial K2-368 b · Super-Earth K2-413 c · Rocky Terrestrial K2-384 e · Super-Earth K2-407 c · Super-Earth

Host System: K2-374

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,789 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.907 R☉

Stellar Mass

0.731 M☉

Metallicity [Fe/H]

-0.29

Extended Stellar Properties

Surface gravity (log g)

4.386 dex

Stellar density

1.828 g/cm³

Metallicity ratio

[Fe/H]

Distance

359.44 parsec

Light-years 1,172.33 ly

V-band magnitude

12.78 mag

Voyager-speed travel 20,674,071 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

2.754 mas

Total Proper Motion

15.574 mas/yr

PM Right Ascension

-1.21 mas/yr

PM Declination

-15.53 mas/yr

Galactic Cartesian (pc)

x = -0.706 · y = 0.650 · z = 0.282

Equatorial (J2000)

RA 137.37950° · Dec 16.35583°

Galactic ℓ, b

212.738° · 37.759°

Ecliptic λ, β

134.913° · -0.005°

HTM-20 index

1632145310