Key parameters at a glance

A radius of 2.45 Earth radii
A mass of 6.57 Earth masses
Surface gravity around 1.09 g
An orbital period of 13.123 days
Equilibrium temperature 750 K (477 °C)
Distance from Earth 1,279.35 light-years
Earth Similarity Index 0.340
Travel time at Voyager 1 speed 22,561,339 years

K2-293 b Planet Profile

Physical Specs

Radius

2.45 R⊕

Radius (Jupiter)

0.219 R♃

Mass

6.57 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.45 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.340

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1260of 1978

top 63.7%

This planet

2.45R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1176 b 2.45 R⊕ TOI-2274 b 2.45 R⊕ Kepler-243 b 2.45 R⊕

Metric	Earth	K2-293 b	Jupiter
Radius (R⊕)	1.00	2.45	11.21
Mass (M⊕)	1.00	6.57	317.83
Density (g/cm³)	5.51	2.45	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 49679172

Gaia DR2

Gaia DR2 2632493590110613760

Gaia DR3

Gaia DR3 2632493590110613760

System

K2-293

Percentile among Sub-Neptune cohort

Radius 2.450 R⊕ · percentile 36 / cohort 1978

Mass 6.570 M⊕ · percentile 34 / cohort 1978

Orbital period 13.12 d · percentile 45 / cohort 1946

Distance 392.25 pc · percentile 41 / cohort 1975

ESI 0.340 · percentile 38 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.123 days

Semi-major axis

— AU

Eccentricity

—

Inclination

88.80 °

Year Length

A year here lasts approximately 13.12 Earth days (3.6% of a terrestrial year).

Transit Fingerprint

Duration

3.980 h

Impact parameter b

0.470

Rp / R★

0.022800

Transit midpoint (BJD)

2,457,749.1347

Extended Orbital Architecture

Planet / star radius ratio

0.022800

Semi-major axis / stellar radius

22.900

Impact parameter (b)

0.470

Transit mid-time (BJD)

2,457,749.1347

Eq. Temperature

750K

(477 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.340

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Dattilo et al. 2019

Instrument

Kepler CCD Array

Publication

2019-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2019 at K2 (12 shown).

EPIC 206032309 b · Rocky Terrestrial EPIC 201833600 c · Rocky Terrestrial EPIC 206215704 b · Rocky Terrestrial EPIC 201754305 d · Rocky Terrestrial EPIC 201841433 b · Rocky Terrestrial EPIC 206317286 b · Rocky Terrestrial EPIC 201615463 c · Rocky Terrestrial EPIC 212499991 b · Super-Earth EPIC 220554210 c · Super-Earth EPIC 201497682 b · Rocky Terrestrial K2-133 e · Super-Earth EPIC 206024342 b · Super-Earth

Host System: K2-293

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,532 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.947 R☉

Stellar Mass

0.958 M☉

Metallicity [Fe/H]

0.22

Extended Stellar Properties

Surface gravity (log g)

4.520 dex

Stellar density

1.688 g/cm³

Metallicity ratio

[M/H]

Distance

392.25 parsec

Light-years 1,279.35 ly

V-band magnitude

13.44 mag

Voyager-speed travel 22,561,339 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

2.521 mas

Total Proper Motion

33.191 mas/yr

PM Right Ascension

31.83 mas/yr

PM Declination

-9.40 mas/yr

Galactic Cartesian (pc)

x = 0.984 · y = -0.145 · z = -0.105

Equatorial (J2000)

RA 351.60650° · Dec -6.02791°

Galactic ℓ, b

75.332° · -60.781°

Ecliptic λ, β

349.912° · -2.212°

HTM-20 index

-526213985