Confirmed Exoplanet Discovered 2021

EPIC 201595106 b

A super-earth orbiting the g-type yellow (sun-like) EPIC 201595106, located approximately 757.0 light-years from Earth.

Key parameters at a glance

  • A radius of 1.57 Earth radii
  • A mass of 7.67 Earth masses
  • Surface gravity around 3.13 g
  • An orbital period of 0.877 days
  • Semi-major axis 0.0177 AU
  • Equilibrium temperature 2,038 K (1765 °C)
  • Distance from Earth 757.01 light-years
  • Earth Similarity Index 0.114
  • Travel time at Voyager 1 speed 13,349,837 years

1 sibling around EPIC 201595106

EPIC 201595106 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 201595106 b this Super-Earth 1.57 7.67 0.877 2,038 2021
K2-360 c Neptune-like 4.02 15.23 9.797 912 2024

EPIC 201595106 b Planet Profile

Physical Specs

Radius
1.57 R⊕
Radius (Jupiter)
0.140 R♃
Mass
7.67 M⊕
Mass (Jupiter)
0.024 M♃
Density
11.10 g/cm³
Surface Gravity
3.13 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.114
HZ Position Inner
Controversial No

Discovery

Year 2021
Method Transit
Facility K2
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#632of 1176

top 53.7%

This planet

1.57R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth EPIC 201595106 b Jupiter
Radius (R⊕)1.001.5711.21
Mass (M⊕)1.007.67317.83
Density (g/cm³)5.5111.101.33
Surface Gravity (g)1.003.132.53
Insolation (S⊕)1.002,852.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 7.670 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 397052808

Gaia DR2

Gaia DR2 3701123406596146048

Gaia DR3

Gaia DR3 3701123406596146048

System

EPIC 201595106

Percentile among Super-Earth cohort

Radius 1.565 R⊕ · percentile 46 / cohort 1176
Mass 7.670 M⊕ · percentile 95 / cohort 1176
Orbital period 0.88 d · percentile 4 / cohort 1164
Distance 232.10 pc · percentile 26 / cohort 1171
ESI 0.114 · percentile 1 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
0.877 days
Semi-major axis
0.0177 AU
Eccentricity
0.000
Inclination
78.20 °

Year Length

A year here lasts roughly 21.1 hours long on a nearly circular orbit at a mean orbital distance of 0.0177 AU.

Transit Fingerprint

Depth

0.025 %

Duration

1.001 h

Impact parameter b

0.814

Rp / R★

0.014700

Transit midpoint (BJD)

2,457,583.0443

Photometric dip

Transit produces a flux drop of 250 ppm lasting ≈ 1.00 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014700

Semi-major axis / stellar radius

5.800

Impact parameter (b)

0.814

RV semi-amplitude (K)

5.190 m/s

Transit mid-time (BJD)

2,457,583.0443

Long. of periastron (ω)

0.00°

Angular separation (arcsec)

0.07630

Eq. Temperature

2,038K

(1765 °C)

Insolation (S⊕)

2,852.00

Earth = 1.00

Earth Similarity (ESI)

0.114

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Adams et al. 2021

Instrument

Kepler CCD Array

Publication

2021-08

Observation locale

Space

Host System: EPIC 201595106

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,679 K — cooler than the Sun (5,778 K)

Estimated Age

6.00 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.958 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.435 dex

Stellar density

1.475 g/cm³

Rotational v·sin i

2.50 km/s

Rotation period

28.00 days

Metallicity ratio

[Fe/H]

Distance
232.10 parsec
Light-years 757.01 ly
V-band magnitude
11.75 mag
Voyager-speed travel 13,349,837 yr

Multi-band Host Photometry — 17 bands

8.414.714.68U12.48B11.75V11.65Gaia11.68Kepler11.20TESS12.26Sloan g14.18Sloan r11.58Sloan i13.72Sloan z10.59J10.26H10.22K10.16W110.22W210.09W38.42W4

Astrometric Data

Parallax

4.280 mas

Total Proper Motion

25.002 mas/yr

PM Right Ascension

6.10 mas/yr

PM Declination

-24.25 mas/yr

Galactic Cartesian (pc)

x = -0.997 · y = -0.065 · z = 0.034

Equatorial (J2000)

RA 183.72036° · Dec 1.96817°

Galactic ℓ, b

282.199° · 63.359°

Ecliptic λ, β

182.628° · 3.285°

HTM-20 index

-1494277308

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