Confirmed Exoplanet Discovered 2019

EPIC 206042996 b

A super-earth orbiting the k-type orange EPIC 206042996, located approximately 1,473.5 light-years from Earth.

Key parameters at a glance

  • A radius of 1.70 Earth radii
  • A mass of 3.53 Earth masses
  • Surface gravity around 1.22 g
  • An orbital period of 5.299 days
  • Distance from Earth 1,473.47 light-years
  • Earth Similarity Index 0.846
  • Travel time at Voyager 1 speed 25,984,672 years
  • Almost certainly tidally locked to its host star given the close orbit

1 sibling around EPIC 206042996

EPIC 206042996 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 206042996 c Rocky Terrestrial 1.20 1.87 0.355 2021
EPIC 206042996 b this Super-Earth 1.70 3.53 5.299 2019

EPIC 206042996 b Planet Profile

Physical Specs

Radius
1.70 R⊕
Radius (Jupiter)
0.152 R♃
Mass
3.53 M⊕
Mass (Jupiter)
0.011 M♃
Density
3.95 g/cm³
Surface Gravity
1.22 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.846
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

#401of 1176

top 34.0%

This planet

1.70R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth EPIC 206042996 b Jupiter
Radius (R⊕)1.001.7011.21
Mass (M⊕)1.003.53317.83
Density (g/cm³)5.513.951.33
Surface Gravity (g)1.001.222.53
Insolation (S⊕)1.000.037

Star Catalogue Identifiers

TIC

TIC 12785571

Gaia DR2

Gaia DR2 2600942622915012608

Gaia DR3

Gaia DR3 2600942622915012608

System

EPIC 206042996

Percentile among Super-Earth cohort

Radius 1.700 R⊕ · percentile 65 / cohort 1176
Mass 3.530 M⊕ · percentile 59 / cohort 1176
Orbital period 5.30 d · percentile 42 / cohort 1164
Distance 451.77 pc · percentile 44 / cohort 1171
ESI 0.846 · percentile 93 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
5.299 days
Semi-major axis
AU
Eccentricity
Inclination
90.50 °

Year Length

A year here lasts approximately 5.30 Earth days (1.5% of a terrestrial year).

Transit Fingerprint

Depth

0.197 %

Duration

3.144 h

Impact parameter b

0.260

Rp / R★

0.030300

Transit midpoint (BJD)

2,456,989.0462

Photometric dip

Transit produces a flux drop of 1,970 ppm lasting ≈ 3.14 h.

Extended Orbital Architecture

Planet / star radius ratio

0.030300

Semi-major axis / stellar radius

16.000

Impact parameter (b)

0.260

Transit mid-time (BJD)

2,456,989.0462

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.846

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Heller et al. 2019

Instrument

Kepler CCD Array

Publication

2019-07

Observation locale

Space

Host System: EPIC 206042996

Spectral Class

K-type orange

Effective Temperature

4,114 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

0.500 R☉

Stellar Mass

0.565 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.800 dex

Stellar density

2.905 g/cm³

Metallicity ratio

[Fe/H]

Distance
451.77 parsec
Light-years 1,473.47 ly
V-band magnitude
16.59 mag
Voyager-speed travel 25,984,672 yr

Multi-band Host Photometry — 12 bands

8.618.318.35B16.59V15.98Gaia16.06Kepler15.14TESS13.96J13.25H13.07K13.04W113.08W211.79W38.62W4

Astrometric Data

Parallax

2.187 mas

Total Proper Motion

10.415 mas/yr

PM Right Ascension

7.30 mas/yr

PM Declination

-7.43 mas/yr

Galactic Cartesian (pc)

x = 0.898 · y = -0.372 · z = -0.235

Equatorial (J2000)

RA 337.51362° · Dec -13.61015°

Galactic ℓ, b

48.065° · -54.376°

Ecliptic λ, β

334.169° · -3.901°

HTM-20 index

451933986

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