Key parameters at a glance

A radius of 4.47 Earth radii
A mass of 18.20 Earth masses
Surface gravity around 0.91 g
An orbital period of 89.193 days
Semi-major axis 0.4060 AU
Equilibrium temperature 483 K (210 °C)
Distance from Earth 1,429.91 light-years
Earth Similarity Index 0.402
Travel time at Voyager 1 speed 25,216,409 years

Kepler-1769 b Planet Profile

Physical Specs

Radius

4.47 R⊕

Radius (Jupiter)

0.398 R♃

Mass

18.20 M⊕

Mass (Jupiter)

0.057 M♃

Density

1.12 g/cm³

Surface Gravity

0.91 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.402

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

#463of 574

top 80.5%

This planet

4.47R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-33 f 4.46 R⊕ 61 Vir c 4.46 R⊕ Kepler-636 b 4.45 R⊕

Metric	Earth	Kepler-1769 b	Jupiter
Radius (R⊕)	1.00	4.47	11.21
Mass (M⊕)	1.00	18.20	317.83
Density (g/cm³)	5.51	1.12	1.33
Surface Gravity (g)	1.00	0.91	2.53
Insolation (S⊕)	1.00	8.90	0.037

Star Catalogue Identifiers

TIC

TIC 271261159

Gaia DR2

Gaia DR2 2078083436127470080

Gaia DR3

Gaia DR3 2078083436127470080

System

Kepler-1769

Percentile among Neptune-like cohort

Radius 4.465 R⊕ · percentile 19 / cohort 574

Mass 18.200 M⊕ · percentile 23 / cohort 574

Orbital period 89.19 d · percentile 80 / cohort 524

Distance 438.41 pc · percentile 54 / cohort 572

ESI 0.402 · percentile 74 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

89.193 days

Semi-major axis

0.4060 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 89.19 Earth days (24.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4060 AU.

Transit Fingerprint

Depth

0.087 %

Duration

4.013 h

Impact parameter b

0.015

Rp / R★

0.027155

Transit midpoint (BJD)

2,455,050.8235

Photometric dip

Transit produces a flux drop of 866 ppm lasting ≈ 4.01 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027155

Semi-major axis / stellar radius

174.500

Impact parameter (b)

0.015

Transit mid-time (BJD)

2,455,050.8235

Angular separation (arcsec)

0.92600

Eq. Temperature

483K

(210 °C)

Insolation (S⊕)

8.90

Earth = 1.00

Earth Similarity (ESI)

0.402

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

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1769

Spectral Class

F-type yellow-white

Effective Temperature

6,071 K — hotter than the Sun (5,778 K)

Estimated Age

1.02 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.295 R☉

Stellar Mass

1.061 M☉

Metallicity [Fe/H]

-0.06

Extended Stellar Properties

Surface gravity (log g)

4.239 dex

Stellar density

12.628 g/cm³

Metallicity ratio

[Fe/H]

Distance

438.41 parsec

Light-years 1,429.91 ly

V-band magnitude

12.49 mag

Voyager-speed travel 25,216,409 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.252 mas

Total Proper Motion

9.870 mas/yr

PM Right Ascension

7.74 mas/yr

PM Declination

-6.13 mas/yr

Galactic Cartesian (pc)

x = 0.304 · y = -0.659 · z = 0.688

Equatorial (J2000)

RA 294.74338° · Dec 43.46116°

Galactic ℓ, b

76.699° · 10.406°

Ecliptic λ, β

312.527° · 63.293°

HTM-20 index

-1420527720