Confirmed Exoplanet Discovered 2021

Kepler-1762 b

A sub-neptune orbiting the f-type yellow-white Kepler-1762, located approximately 5,426.4 light-years from Earth.

Key parameters at a glance

  • A radius of 2.76 Earth radii
  • A mass of 8.05 Earth masses
  • Surface gravity around 1.06 g
  • An orbital period of 29.539 days
  • Semi-major axis 0.2040 AU
  • Equilibrium temperature 714 K (441 °C)
  • Distance from Earth 5,426.39 light-years
  • Earth Similarity Index 0.342
  • Travel time at Voyager 1 speed 95,694,344 years

Kepler-1762 b Planet Profile

Physical Specs

Radius
2.76 R⊕
Radius (Jupiter)
0.246 R♃
Mass
8.05 M⊕
Mass (Jupiter)
0.025 M♃
Density
2.10 g/cm³
Surface Gravity
1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.342
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

#792of 1978

top 40.0%

This planet

2.76R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth Kepler-1762 b Jupiter
Radius (R⊕)1.002.7611.21
Mass (M⊕)1.008.05317.83
Density (g/cm³)5.512.101.33
Surface Gravity (g)1.001.062.53
Insolation (S⊕)1.0061.490.037

Star Catalogue Identifiers

TIC

TIC 122447896

Gaia DR2

Gaia DR2 2101083368257255040

Gaia DR3

Gaia DR3 2101083368257255040

System

Kepler-1762

Percentile among Sub-Neptune cohort

Radius 2.760 R⊕ · percentile 60 / cohort 1978
Mass 8.050 M⊕ · percentile 55 / cohort 1978
Orbital period 29.54 d · percentile 73 / cohort 1946
Distance 1,663.74 pc · percentile 95 / cohort 1975
ESI 0.342 · percentile 39 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
29.539 days
Semi-major axis
0.2040 AU
Eccentricity
0.000
Inclination
89.78 °

Year Length

A year here lasts approximately 29.54 Earth days (8.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2040 AU.

Transit Fingerprint

Depth

0.040 %

Duration

4.139 h

Impact parameter b

0.213

Rp / R★

0.018587

Transit midpoint (BJD)

2,454,976.9161

Photometric dip

Transit produces a flux drop of 403 ppm lasting ≈ 4.14 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018587

Semi-major axis / stellar radius

54.940

Impact parameter (b)

0.213

Transit mid-time (BJD)

2,454,976.9161

Angular separation (arcsec)

0.12300

Eq. Temperature

714K

(441 °C)

Insolation (S⊕)

61.49

Earth = 1.00

Earth Similarity (ESI)

0.342

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-1762

Spectral Class

F-type yellow-white

Effective Temperature

6,572 K — hotter than the Sun (5,778 K)

Estimated Age

0.28 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.238 R☉

Stellar Mass

1.298 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.365 dex

Stellar density

3.472 g/cm³

Metallicity ratio

[Fe/H]

Distance
1,663.74 parsec
Light-years 5,426.39 ly
V-band magnitude
15.24 mag
Voyager-speed travel 95,694,344 yr

Multi-band Host Photometry — 16 bands

8.915.715.72B15.24V15.08Gaia15.11Kepler14.68TESS15.48Sloan g15.07Sloan r14.95Sloan i14.92Sloan z14.15J13.85H13.87K13.79W113.82W212.36W38.91W4

Astrometric Data

Parallax

0.573 mas

Total Proper Motion

1.427 mas/yr

PM Right Ascension

-0.61 mas/yr

PM Declination

1.29 mas/yr

Galactic Cartesian (pc)

x = 0.269 · y = -0.720 · z = 0.640

Equatorial (J2000)

RA 290.49315° · Dec 39.78551°

Galactic ℓ, b

71.900° · 11.592°

Ecliptic λ, β

303.534° · 60.860°

HTM-20 index

1577225588

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