Confirmed Exoplanet Discovered 2021

Kepler-1711 b

A super-earth orbiting the g-type yellow (sun-like) Kepler-1711, located approximately 1,925.2 light-years from Earth.

Key parameters at a glance

  • A radius of 1.92 Earth radii
  • A mass of 4.36 Earth masses
  • Surface gravity around 1.18 g
  • An orbital period of 21.061 days
  • Semi-major axis 0.1463 AU
  • Equilibrium temperature 669 K (396 °C)
  • Distance from Earth 1,925.19 light-years
  • Earth Similarity Index 0.417
  • Travel time at Voyager 1 speed 33,950,803 years

Kepler-1711 b Planet Profile

Physical Specs

Radius
1.92 R⊕
Radius (Jupiter)
0.172 R♃
Mass
4.36 M⊕
Mass (Jupiter)
0.014 M♃
Density
3.37 g/cm³
Surface Gravity
1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.417
HZ Position Inner
Controversial No

Discovery

Year 2021
Method Transit
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#101of 1176

top 8.5%

This planet

1.92R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-1711 b Jupiter
Radius (R⊕)1.001.9211.21
Mass (M⊕)1.004.36317.83
Density (g/cm³)5.513.371.33
Surface Gravity (g)1.001.182.53
Insolation (S⊕)1.0047.390.037

Star Catalogue Identifiers

TIC

TIC 273778951

Gaia DR2

Gaia DR2 2078426655561355264

System

Kepler-1711

Percentile among Super-Earth cohort

Radius 1.923 R⊕ · percentile 91 / cohort 1176
Mass 4.360 M⊕ · percentile 84 / cohort 1176
Orbital period 21.06 d · percentile 86 / cohort 1164
Distance 590.27 pc · percentile 53 / cohort 1171
ESI 0.417 · percentile 63 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
21.061 days
Semi-major axis
0.1463 AU
Eccentricity
0.000
Inclination
89.67 °

Year Length

A year here lasts approximately 21.06 Earth days (5.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1463 AU.

Transit Fingerprint

Depth

0.030 %

Duration

5.247 h

Impact parameter b

0.022

Rp / R★

0.015880

Transit midpoint (BJD)

2,454,976.5998

Photometric dip

Transit produces a flux drop of 301 ppm lasting ≈ 5.25 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015880

Semi-major axis / stellar radius

30.680

Impact parameter (b)

0.022

Transit mid-time (BJD)

2,454,976.5998

Angular separation (arcsec)

0.24800

Eq. Temperature

669K

(396 °C)

Insolation (S⊕)

47.39

Earth = 1.00

Earth Similarity (ESI)

0.417

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Host System: Kepler-1711

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,706 K — cooler than the Sun (5,778 K)

Estimated Age

6.60 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.034 R☉

Stellar Mass

0.940 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.382 dex

Stellar density

1.232 g/cm³

Metallicity ratio

[Fe/H]

Distance
590.27 parsec
Light-years 1,925.19 ly
V-band magnitude
13.30 mag
Voyager-speed travel 33,950,803 yr

Multi-band Host Photometry — 16 bands

9.213.913.88B13.30V13.18Gaia13.18Kepler12.71TESS13.66Sloan g13.14Sloan r12.98Sloan i12.93Sloan z12.02J11.70H11.64K11.57W111.63W211.24W39.19W4

Astrometric Data

Total Proper Motion

11.506 mas/yr

PM Right Ascension

-3.20 mas/yr

PM Declination

11.05 mas/yr

Galactic Cartesian (pc)

x = 0.350 · y = -0.653 · z = 0.672

Equatorial (J2000)

RA 298.17729° · Dec 42.23703°

Galactic ℓ, b

76.843° · 7.611°

Ecliptic λ, β

316.528° · 61.203°

HTM-20 index

-186533487

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