Key parameters at a glance

A radius of 2.79 Earth radii
A mass of 8.20 Earth masses
Surface gravity around 1.05 g
An orbital period of 26.680 days
Semi-major axis 0.1516 AU
Equilibrium temperature 641 K (368 °C)
Distance from Earth 681.90 light-years
Earth Similarity Index 0.378
Travel time at Voyager 1 speed 12,025,264 years

K2-319 b Planet Profile

Physical Specs

Radius

2.79 R⊕

Radius (Jupiter)

0.249 R♃

Mass

8.20 M⊕

Mass (Jupiter)

0.026 M♃

Density

2.07 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.378

HZ Position Unknown

Controversial No

Discovery

Year 2020

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#754of 1978

top 38.1%

This planet

2.79R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

AU Mic c 2.79 R⊕ Kepler-150 d 2.79 R⊕ Kepler-192 c 2.79 R⊕

Metric	Earth	K2-319 b	Jupiter
Radius (R⊕)	1.00	2.79	11.21
Mass (M⊕)	1.00	8.20	317.83
Density (g/cm³)	5.51	2.07	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 301540319

Gaia DR2

Gaia DR2 3811688440459523200

Gaia DR3

Gaia DR3 3811688440459523200

System

K2-319

Percentile among Sub-Neptune cohort

Radius 2.790 R⊕ · percentile 61 / cohort 1978

Mass 8.200 M⊕ · percentile 56 / cohort 1978

Orbital period 26.68 d · percentile 70 / cohort 1946

Distance 209.07 pc · percentile 30 / cohort 1975

ESI 0.378 · percentile 48 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

26.680 days

Semi-major axis

0.1516 AU

Eccentricity

—

Inclination

89.45 °

Year Length

A year here lasts approximately 26.68 Earth days (7.3% of a terrestrial year) at a mean orbital distance of 0.1516 AU.

Transit Fingerprint

Depth

0.083 %

Impact parameter b

0.350

Transit midpoint (BJD)

2,457,915.5920

Photometric dip

Transit produces a flux drop of 830 ppm.

Eq. Temperature

641K

(368 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.378

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Castro Gonz Aacute Lez et al. 2020

Instrument

Kepler CCD Array

Publication

2020-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2020 at K2 (12 shown).

EPIC 201170410.02 · Rocky Terrestrial EPIC 201757695.02 · Rocky Terrestrial K2-323 b · Sub-Neptune K2-315 b · Rocky Terrestrial K2-316 c · Super-Earth K2-318 b · Super-Earth K2-325 b · Sub-Neptune K2-317 b · Sub-Neptune K2-322 b · Super-Earth K2-316 b · Super-Earth K2-324 b · Sub-Neptune K2-320 b · Sub-Neptune

Host System: K2-319

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,440 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.898 R☉

Stellar Mass

0.954 M☉

Metallicity [Fe/H]

—

Extended Stellar Properties

Surface gravity (log g)

4.512 dex

Stellar density

1.621 g/cm³

Systemic radial velocity

8.64 km/s

Distance

209.07 parsec

Light-years 681.90 ly

V-band magnitude

12.21 mag

Voyager-speed travel 12,025,264 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

4.755 mas

Total Proper Motion

22.917 mas/yr

PM Right Ascension

-2.86 mas/yr

PM Declination

-22.74 mas/yr

Galactic Cartesian (pc)

x = -0.972 · y = 0.228 · z = 0.053

Equatorial (J2000)

RA 166.80101° · Dec 3.03994°

Galactic ℓ, b

252.451° · 55.343°

Ecliptic λ, β

166.670° · -2.410°

HTM-20 index

1455908156