Confirmed Exoplanet Discovered 2021

EPIC 212624936 c

A sub-neptune orbiting the g-type yellow (sun-like) EPIC 212624936, located approximately 1,832.8 light-years from Earth.

Key parameters at a glance

  • A radius of 2.30 Earth radii
  • A mass of 5.90 Earth masses
  • Surface gravity around 1.12 g
  • An orbital period of 11.811 days
  • Distance from Earth 1,832.77 light-years
  • Earth Similarity Index 0.734
  • Travel time at Voyager 1 speed 32,320,812 years

1 sibling around EPIC 212624936

EPIC 212624936 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 212624936 b Rocky Terrestrial 1.20 1.87 0.579 2021
EPIC 212624936 c this Sub-Neptune 2.30 5.90 11.811 2021

EPIC 212624936 c Planet Profile

Physical Specs

Radius
2.30 R⊕
Radius (Jupiter)
0.205 R♃
Mass
5.90 M⊕
Mass (Jupiter)
0.019 M♃
Density
2.66 g/cm³
Surface Gravity
1.12 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.734
HZ Position Unknown
Controversial No

Discovery

Year 2021
Method Transit
Facility K2
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1499of 1978

top 75.7%

This planet

2.30R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth EPIC 212624936 c Jupiter
Radius (R⊕)1.002.3011.21
Mass (M⊕)1.005.90317.83
Density (g/cm³)5.512.661.33
Surface Gravity (g)1.001.122.53
Insolation (S⊕)1.000.037

Star Catalogue Identifiers

TIC

TIC 2764004

Gaia DR2

Gaia DR2 3614661419960402944

Gaia DR3

Gaia DR3 3614661419960402944

System

EPIC 212624936

Percentile among Sub-Neptune cohort

Radius 2.300 R⊕ · percentile 24 / cohort 1978
Mass 5.900 M⊕ · percentile 23 / cohort 1978
Orbital period 11.81 d · percentile 41 / cohort 1946
Distance 561.93 pc · percentile 50 / cohort 1975
ESI 0.734 · percentile 95 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
11.811 days
Semi-major axis
AU
Eccentricity
Inclination
90.00 °

Year Length

A year here lasts approximately 11.81 Earth days (3.2% of a terrestrial year).

Transit Fingerprint

Depth

0.072 %

Duration

2.064 h

Rp / R★

0.022600

Transit midpoint (BJD)

2,457,233.7871

Photometric dip

Transit produces a flux drop of 722 ppm lasting ≈ 2.06 h.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.734

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Adams et al. 2021

Instrument

Kepler CCD Array

Publication

2021-08

Observation locale

Space

Host System: EPIC 212624936

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,765 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

0.930 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

-0.39

Extended Stellar Properties

Surface gravity (log g)

4.400 dex

Stellar density

1.855 g/cm³

Metallicity ratio

[Fe/H]

Distance
561.93 parsec
Light-years 1,832.77 ly
V-band magnitude
13.98 mag
Voyager-speed travel 32,320,812 yr

Multi-band Host Photometry — 12 bands

8.914.814.76B13.98V13.83Gaia13.87Kepler13.36TESS12.67J12.34H12.29K12.24W112.29W212.32W38.88W4

Astrometric Data

Parallax

1.751 mas

Total Proper Motion

34.578 mas/yr

PM Right Ascension

-31.24 mas/yr

PM Declination

14.81 mas/yr

Galactic Cartesian (pc)

x = -0.847 · y = -0.502 · z = -0.174

Equatorial (J2000)

RA 210.63762° · Dec -10.02369°

Galactic ℓ, b

330.234° · 49.042°

Ecliptic λ, β

212.007° · 2.288°

HTM-20 index

-1105618179

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