Confirmed Exoplanet Discovered 2021

Kepler-1743 b

A super-earth orbiting the g-type yellow (sun-like) Kepler-1743, located approximately 1,757.4 light-years from Earth.

Key parameters at a glance

  • A radius of 1.60 Earth radii
  • A mass of 3.18 Earth masses
  • Surface gravity around 1.24 g
  • An orbital period of 7.650 days
  • Semi-major axis 0.0840 AU
  • Equilibrium temperature 1,144 K (871 °C)
  • Distance from Earth 1,757.35 light-years
  • Earth Similarity Index 0.252
  • Travel time at Voyager 1 speed 30,990,889 years

Kepler-1743 b Planet Profile

Physical Specs

Radius
1.60 R⊕
Radius (Jupiter)
0.143 R♃
Mass
3.18 M⊕
Mass (Jupiter)
0.010 M♃
Density
4.28 g/cm³
Surface Gravity
1.24 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.252
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

#584of 1176

top 49.6%

This planet

1.60R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-1743 b Jupiter
Radius (R⊕)1.001.6011.21
Mass (M⊕)1.003.18317.83
Density (g/cm³)5.514.281.33
Surface Gravity (g)1.001.242.53
Insolation (S⊕)1.00515.000.037

Star Catalogue Identifiers

TIC

TIC 290035649

Gaia DR2

Gaia DR2 2129407784218783488

Gaia DR3

Gaia DR3 2129407784218783488

System

Kepler-1743

Percentile among Super-Earth cohort

Radius 1.599 R⊕ · percentile 50 / cohort 1176
Mass 3.180 M⊕ · percentile 46 / cohort 1176
Orbital period 7.65 d · percentile 56 / cohort 1164
Distance 538.81 pc · percentile 49 / cohort 1171
ESI 0.252 · percentile 23 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
7.650 days
Semi-major axis
0.0840 AU
Eccentricity
0.000
Inclination
77.52 °

Year Length

A year here lasts approximately 7.65 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0840 AU.

Transit Fingerprint

Depth

0.006 %

Duration

6.625 h

Impact parameter b

0.571

Rp / R★

0.007310

Transit midpoint (BJD)

2,454,971.3311

Photometric dip

Transit produces a flux drop of 55 ppm lasting ≈ 6.63 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007310

Semi-major axis / stellar radius

7.550

Impact parameter (b)

0.571

Transit mid-time (BJD)

2,454,971.3311

Angular separation (arcsec)

0.15600

Eq. Temperature

1,144K

(871 °C)

Insolation (S⊕)

515.00

Earth = 1.00

Earth Similarity (ESI)

0.252

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Host System: Kepler-1743

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,855 K — hotter than the Sun (5,778 K)

Estimated Age

3.72 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.613 R☉

Stellar Mass

1.266 M☉

Metallicity [Fe/H]

0.40

Extended Stellar Properties

Surface gravity (log g)

4.125 dex

Stellar density

0.023 g/cm³

Metallicity ratio

[Fe/H]

Distance
538.81 parsec
Light-years 1,757.35 ly
V-band magnitude
12.06 mag
Voyager-speed travel 30,990,889 yr

Multi-band Host Photometry — 15 bands

9.112.912.90B12.06V11.94Gaia11.93Kepler11.49TESS12.47Sloan g11.87Sloan r11.69Sloan i10.89J10.61H10.56K10.48W110.54W210.48W39.12W4

Astrometric Data

Parallax

1.827 mas

Total Proper Motion

0.981 mas/yr

PM Right Ascension

0.89 mas/yr

PM Declination

0.41 mas/yr

Galactic Cartesian (pc)

x = 0.234 · y = -0.625 · z = 0.745

Equatorial (J2000)

RA 290.55236° · Dec 48.12626°

Galactic ℓ, b

79.693° · 15.071°

Ecliptic λ, β

310.202° · 68.715°

HTM-20 index

-338516212

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