Key parameters at a glance

A radius of 4.56 Earth radii
A mass of 18.80 Earth masses
Surface gravity around 0.91 g
An orbital period of 70.468 days
Semi-major axis 0.3512 AU
Equilibrium temperature 511 K (238 °C)
Distance from Earth 5,030.89 light-years
Earth Similarity Index 0.379
Travel time at Voyager 1 speed 88,719,759 years

Kepler-1764 b Planet Profile

Physical Specs

Radius

4.56 R⊕

Radius (Jupiter)

0.406 R♃

Mass

18.80 M⊕

Mass (Jupiter)

0.059 M♃

Density

1.09 g/cm³

Surface Gravity

0.91 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.379

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

#456of 574

top 79.3%

This planet

4.56R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-6041 b 4.55 R⊕ HIP 71135 b 4.55 R⊕ K2-405 b 4.57 R⊕

Metric	Earth	Kepler-1764 b	Jupiter
Radius (R⊕)	1.00	4.56	11.21
Mass (M⊕)	1.00	18.80	317.83
Density (g/cm³)	5.51	1.09	1.33
Surface Gravity (g)	1.00	0.91	2.53
Insolation (S⊕)	1.00	16.17	0.037

Star Catalogue Identifiers

TIC

TIC 138431522

Gaia DR2

Gaia DR2 2077411363951616512

Gaia DR3

Gaia DR3 2077411363951616512

System

Kepler-1764

Percentile among Neptune-like cohort

Radius 4.555 R⊕ · percentile 21 / cohort 574

Mass 18.800 M⊕ · percentile 24 / cohort 574

Orbital period 70.47 d · percentile 76 / cohort 524

Distance 1,542.48 pc · percentile 85 / cohort 572

ESI 0.379 · percentile 70 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

70.468 days

Semi-major axis

0.3512 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 70.47 Earth days (19.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3512 AU.

Transit Fingerprint

Depth

0.092 %

Duration

6.618 h

Impact parameter b

0.048

Rp / R★

0.028593

Transit midpoint (BJD)

2,455,022.1609

Photometric dip

Transit produces a flux drop of 922 ppm lasting ≈ 6.62 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028593

Semi-major axis / stellar radius

83.150

Impact parameter (b)

0.048

Transit mid-time (BJD)

2,455,022.1609

Angular separation (arcsec)

0.22800

Eq. Temperature

511K

(238 °C)

Insolation (S⊕)

16.17

Earth = 1.00

Earth Similarity (ESI)

0.379

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-1764

Spectral Class

F-type yellow-white

Effective Temperature

6,461 K — hotter than the Sun (5,778 K)

Estimated Age

0.24 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.131 R☉

Stellar Mass

1.162 M☉

Metallicity [Fe/H]

-0.14

Extended Stellar Properties

Surface gravity (log g)

4.396 dex

Stellar density

2.190 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,542.48 parsec

Light-years 5,030.89 ly

V-band magnitude

14.91 mag

Voyager-speed travel 88,719,759 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.620 mas

Total Proper Motion

5.663 mas/yr

PM Right Ascension

3.53 mas/yr

PM Declination

4.43 mas/yr

Galactic Cartesian (pc)

x = 0.304 · y = -0.686 · z = 0.661

Equatorial (J2000)

RA 293.87990° · Dec 41.39384°

Galactic ℓ, b

74.537° · 10.014°

Ecliptic λ, β

309.655° · 61.586°

HTM-20 index

1465355849