Key parameters at a glance

A radius of 1.51 Earth radii
A mass of 2.90 Earth masses
Surface gravity around 1.27 g
An orbital period of 8.131 days
Distance from Earth 1,271.04 light-years
Earth Similarity Index 0.888
Travel time at Voyager 1 speed 22,414,727 years

K2-213 b Planet Profile

Physical Specs

Radius

1.51 R⊕

Radius (Jupiter)

0.135 R♃

Mass

2.90 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.59 g/cm³

Surface Gravity

1.27 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.888

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#726of 1176

top 61.6%

This planet

1.51R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1932 b 1.51 R⊕ Kepler-1809 b 1.51 R⊕ Kepler-1885 b 1.51 R⊕

Metric	Earth	K2-213 b	Jupiter
Radius (R⊕)	1.00	1.51	11.21
Mass (M⊕)	1.00	2.90	317.83
Density (g/cm³)	5.51	4.59	1.33
Surface Gravity (g)	1.00	1.27	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 257435562

Gaia DR2

Gaia DR2 2551651031310145024

Gaia DR3

Gaia DR3 2551651031310145024

System

K2-213

Percentile among Super-Earth cohort

Radius 1.514 R⊕ · percentile 38 / cohort 1176

Mass 2.900 M⊕ · percentile 35 / cohort 1176

Orbital period 8.13 d · percentile 58 / cohort 1164

Distance 389.70 pc · percentile 39 / cohort 1171

ESI 0.888 · percentile 96 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

8.131 days

Semi-major axis

— AU

Eccentricity

—

Inclination

87.86 °

Year Length

A year here lasts approximately 8.13 Earth days (2.2% of a terrestrial year).

Transit Fingerprint

Rp / R★

0.011526

Transit midpoint (BJD)

2,457,399.0026

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.888

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Mayo et al. 2018

Instrument

Kepler CCD Array

Publication

2018-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2018 at K2 (12 shown).

K2-190 c · Rocky Terrestrial K2-183 b · Rocky Terrestrial K2-209 b · Rocky Terrestrial K2-210 b · Rocky Terrestrial K2-165 b · Super-Earth K2-169 b · Super-Earth K2-148 b · Super-Earth K2-219 b · Super-Earth K2-190 b · Super-Earth K2-200 b · Super-Earth K2-201 b · Super-Earth K2-170 b · Super-Earth

Host System: K2-213

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,794 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.204 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

0.25

Extended Stellar Properties

Surface gravity (log g)

4.250 dex

Stellar density

0.642 g/cm³

Systemic radial velocity

-6.30 km/s

Metallicity ratio

[Fe/H]

Distance

389.70 parsec

Light-years 1,271.04 ly

V-band magnitude

11.80 mag

Voyager-speed travel 22,414,727 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

2.538 mas

Total Proper Motion

18.435 mas/yr

PM Right Ascension

18.24 mas/yr

PM Declination

2.64 mas/yr

Galactic Cartesian (pc)

x = 0.972 · y = 0.227 · z = 0.061

Equatorial (J2000)

RA 13.14040° · Dec 3.50777°

Galactic ℓ, b

123.482° · -59.363°

Ecliptic λ, β

13.450° · -1.956°

HTM-20 index

-1400319537