Key parameters at a glance

A radius of 0.76 Earth radii
A mass of 0.36 Earth masses
Surface gravity around 0.63 g
An orbital period of 0.809 days
Semi-major axis 0.0117 AU
Distance from Earth 930.07 light-years
Earth Similarity Index 0.895
Travel time at Voyager 1 speed 16,401,836 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around K2-413

K2-413 b 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
K2-413 b this	Rocky Terrestrial	0.76	0.36	0.809	—	2022
K2-413 c	Rocky Terrestrial	1.23	2.05	5.330	—	2022

K2-413 b Planet Profile

Physical Specs

Radius

0.76 R⊕

Radius (Jupiter)

0.068 R♃

Mass

0.36 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.55 g/cm³

Surface Gravity

0.63 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.895

HZ Position Inner

Controversial No

Discovery

Year 2022

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#504of 570

top 88.2%

This planet

0.76R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1588 b 0.76 R⊕ Kepler-1402 b 0.76 R⊕ Kepler-1542 e 0.76 R⊕

Metric	Earth	K2-413 b	Jupiter
Radius (R⊕)	1.00	0.76	11.21
Mass (M⊕)	1.00	0.36	317.83
Density (g/cm³)	5.51	4.55	1.33
Surface Gravity (g)	1.00	0.63	2.53
Insolation (S⊕)	1.00	921.76	0.037

Star Catalogue Identifiers

TIC

TIC 423610130

Gaia DR2

Gaia DR2 2439890557725244800

Gaia DR3

Gaia DR3 2439890557725244800

System

K2-413

Percentile among Rocky Terrestrial cohort

Radius 0.760 R⊕ · percentile 12 / cohort 570

Mass 0.363 M⊕ · percentile 9 / cohort 570

Orbital period 0.81 d · percentile 8 / cohort 567

Distance 285.16 pc · percentile 39 / cohort 566

ESI 0.895 · percentile 90 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.809 days

Semi-major axis

0.0117 AU

Eccentricity

—

Inclination

89.95 °

Year Length

A year here lasts roughly 19.4 hours long at a mean orbital distance of 0.0117 AU.

Eq. Temperature

—

Insolation (S⊕)

921.76

Earth = 1.00

Earth Similarity (ESI)

0.895

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water). Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Del Ser et al. 2022

Instrument

Kepler CCD Array

Publication

2022-10

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: K2-413

Spectral Class

K-type orange

Effective Temperature

4,116 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.700 R☉

Stellar Mass

0.808 M☉

Metallicity [Fe/H]

-0.21

Extended Stellar Properties

Surface gravity (log g)

4.656 dex

Stellar density

2.183 g/cm³

Metallicity ratio

[Fe/H]

Distance

285.16 parsec

Light-years 930.07 ly

V-band magnitude

15.01 mag

Voyager-speed travel 16,401,836 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

3.478 mas

Total Proper Motion

23.155 mas/yr

PM Right Ascension

-7.07 mas/yr

PM Declination

-22.05 mas/yr

Galactic Cartesian (pc)

x = 0.985 · y = -0.114 · z = -0.132

Equatorial (J2000)

RA 353.41757° · Dec -7.61203°

Galactic ℓ, b

75.992° · -63.157°

Ecliptic λ, β

350.940° · -4.378°

HTM-20 index

703776014