Confirmed Exoplanet Discovered 2019

EPIC 212587672 b

A super-earth orbiting the f-type yellow-white EPIC 212587672, located approximately 1,043.9 light-years from Earth.

Key parameters at a glance

  • A radius of 1.26 Earth radii
  • A mass of 2.13 Earth masses
  • Surface gravity around 1.34 g
  • An orbital period of 15.281 days
  • Equilibrium temperature 756 K (483 °C)
  • Distance from Earth 1,043.93 light-years
  • Earth Similarity Index 0.415
  • Travel time at Voyager 1 speed 18,409,661 years

1 sibling around EPIC 212587672

EPIC 212587672 b 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 212587672 b this Super-Earth 1.26 2.13 15.281 756 2019
EPIC 212587672 c Sub-Neptune 2.32 5.99 23.229 658 2021

EPIC 212587672 b Planet Profile

Physical Specs

Radius
1.26 R⊕
Radius (Jupiter)
0.112 R♃
Mass
2.13 M⊕
Mass (Jupiter)
0.007 M♃
Density
5.85 g/cm³
Surface Gravity
1.34 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.415
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

#1149of 1176

top 97.6%

This planet

1.26R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth EPIC 212587672 b Jupiter
Radius (R⊕)1.001.2611.21
Mass (M⊕)1.002.13317.83
Density (g/cm³)5.515.851.33
Surface Gravity (g)1.001.342.53
Insolation (S⊕)1.000.037

Star Catalogue Identifiers

TIC

TIC 771548

Gaia DR2

Gaia DR2 3616620814104819328

Gaia DR3

Gaia DR3 3616620814104819328

System

EPIC 212587672

Percentile among Super-Earth cohort

Radius 1.260 R⊕ · percentile 2 / cohort 1176
Mass 2.130 M⊕ · percentile 3 / cohort 1176
Orbital period 15.28 d · percentile 79 / cohort 1164
Distance 320.07 pc · percentile 33 / cohort 1171
ESI 0.415 · percentile 63 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
15.281 days
Semi-major axis
AU
Eccentricity
Inclination
°

Year Length

A year here lasts approximately 15.28 Earth days (4.2% of a terrestrial year).

Transit Fingerprint

Depth

0.019 %

Duration

3.460 h

Impact parameter b

0.430

Rp / R★

0.011700

Transit midpoint (BJD)

2,457,227.6450

Photometric dip

Transit produces a flux drop of 187 ppm lasting ≈ 3.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011700

Semi-major axis / stellar radius

30.750

Impact parameter (b)

0.430

Transit mid-time (BJD)

2,457,227.6450

Eq. Temperature

756K

(483 °C)

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.415

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Heller et al. 2019

Instrument

Kepler CCD Array

Publication

2019-07

Observation locale

Space

Host System: EPIC 212587672

Spectral Class

F-type yellow-white

Effective Temperature

6,004 K — hotter than the Sun (5,778 K)

Estimated Age

Stellar Radius

0.980 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

-0.18

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.859 g/cm³

Metallicity ratio

[Fe/H]

Distance
320.07 parsec
Light-years 1,043.93 ly
V-band magnitude
12.49 mag
Voyager-speed travel 18,409,661 yr

Multi-band Host Photometry — 12 bands

9.112.712.69B12.49V12.20Gaia12.19Kepler11.79TESS11.18J10.91H10.86K10.80W110.85W210.77W39.09W4

Astrometric Data

Parallax

3.097 mas

Total Proper Motion

28.557 mas/yr

PM Right Ascension

-14.72 mas/yr

PM Declination

-24.47 mas/yr

Galactic Cartesian (pc)

x = -0.887 · y = -0.422 · z = -0.188

Equatorial (J2000)

RA 205.44451° · Dec -10.86255°

Galactic ℓ, b

322.417° · 50.095°

Ecliptic λ, β

207.518° · -0.290°

HTM-20 index

142498538

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