Confirmed Exoplanet Discovered 2022

EPIC 206317286 c

A sub-neptune orbiting the k-type orange EPIC 206317286, located approximately 1,025.3 light-years from Earth.

Key parameters at a glance

  • A radius of 2.09 Earth radii
  • A mass of 5.03 Earth masses
  • Surface gravity around 1.15 g
  • An orbital period of 17.515 days
  • Distance from Earth 1,025.27 light-years
  • Earth Similarity Index 0.768
  • Travel time at Voyager 1 speed 18,080,660 years
  • Almost certainly tidally locked to its host star given the close orbit

1 sibling around EPIC 206317286

EPIC 206317286 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
EPIC 206317286 b Rocky Terrestrial 0.96 0.84 1.583 — 2019
EPIC 206317286 c this Sub-Neptune 2.09 5.03 17.515 — 2022

EPIC 206317286 c Planet Profile

Physical Specs

Radius
2.09 R⊕
Radius (Jupiter)
0.187 R♃
Mass
5.03 M⊕
Mass (Jupiter)
0.016 M♃
Density
3.01 g/cm³
Surface Gravity
1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.768
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

#1831of 1978

top 92.5%

This planet

2.09R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-317 b 2.09 R⊕ Kepler-151 c 2.09 R⊕ Kepler-372 c 2.09 R⊕
Metric Earth EPIC 206317286 c Jupiter
Radius (R⊕)1.002.0911.21
Mass (M⊕)1.005.03317.83
Density (g/cm³)5.513.011.33
Surface Gravity (g)1.001.152.53
Insolation (S⊕)1.00—0.037

Star Catalogue Identifiers

TIC

TIC 250956593

Gaia DR2

Gaia DR2 2621545958991110144

Gaia DR3

Gaia DR3 2621545958991110144

System

EPIC 206317286

Percentile among Sub-Neptune cohort

Radius 2.094 R⊕ · percentile 7 / cohort 1978
Mass 5.030 M⊕ · percentile 9 / cohort 1978
Orbital period 17.52 d · percentile 57 / cohort 1946
Distance 314.35 pc · percentile 36 / cohort 1975
ESI 0.768 · percentile 98 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
17.515 days
Semi-major axis
— AU
Eccentricity
—
Inclination
— °

Year Length

A year here lasts approximately 17.52 Earth days (4.8% of a terrestrial year).

Transit Fingerprint

Depth

0.095 %

Duration

3.936 h

Impact parameter b

0.268

Rp / R★

0.025300

Transit midpoint (BJD)

2,456,977.8215

Photometric dip

Transit produces a flux drop of 948 ppm lasting ≈ 3.94 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025300

Semi-major axis / stellar radius

34.540

Impact parameter (b)

0.268

Transit mid-time (BJD)

2,456,977.8215

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.768

0 = alien, 1 = Earth-identical

Insufficient insolation data. Close-orbiting tidally-locked around a cool host.

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: EPIC 206317286

Spectral Class

K-type orange

Effective Temperature

4,752 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.758 R☉

Stellar Mass

0.832 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.596 dex

Stellar density

2.520 g/cm³

Metallicity ratio

[Fe/H]

Distance
314.35 parsec
Light-years 1,025.27 ly
V-band magnitude
14.01 mag
Voyager-speed travel 18,080,660 yr

Multi-band Host Photometry — 17 bands

8.916.716.68U15.08B14.01V13.77Gaia13.81Kepler13.15TESS14.55Sloan g13.69Sloan r13.40Sloan i13.23Sloan z12.26J11.72H11.64K11.59W111.66W211.90W38.89W4

Astrometric Data

Parallax

3.153 mas

Total Proper Motion

58.425 mas/yr

PM Right Ascension

57.10 mas/yr

PM Declination

-12.39 mas/yr

Galactic Cartesian (pc)

x = 0.916 · y = -0.377 · z = -0.139

Equatorial (J2000)

RA 337.61784° · Dec -7.97246°

Galactic ℓ, b

56.170° · -51.545°

Ecliptic λ, β

336.339° · 1.304°

HTM-20 index

-1225197842

Similar Worlds

Kepler-934 b

Sub-Neptune · K-type orange

Radius 2.09 R⊕ · 1,985.4 ly

TOI-500 c

Sub-Neptune · K-type orange

Radius 2.09 R⊕ · 154.6 ly

Kepler-691 b

Sub-Neptune · K-type orange

Radius 2.09 R⊕ · 910.4 ly

Kepler-1529 b

Sub-Neptune · K-type orange

Radius 2.10 R⊕ · 2,155.9 ly

TOI-5734 b

Sub-Neptune · K-type orange

Radius 2.10 R⊕ · 106.0 ly

K2-323 b

Sub-Neptune · K-type orange

Radius 2.10 R⊕ · 385.9 ly

Explore Related Categories

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