Key parameters at a glance

A radius of 2.50 Earth radii
A mass of 6.78 Earth masses
Surface gravity around 1.09 g
An orbital period of 10.419 days
Semi-major axis 0.0917 AU
Equilibrium temperature 855 K (582 °C)
Distance from Earth 2,493.32 light-years
Earth Similarity Index 0.296
Travel time at Voyager 1 speed 43,969,680 years

Kepler-1765 b Planet Profile

Physical Specs

Radius

2.50 R⊕

Radius (Jupiter)

0.223 R♃

Mass

6.78 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.40 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.296

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

#1190of 1978

top 60.1%

This planet

2.50R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-77 b 2.50 R⊕ GJ 163 c 2.50 R⊕ Kepler-126 d 2.50 R⊕

Metric	Earth	Kepler-1765 b	Jupiter
Radius (R⊕)	1.00	2.50	11.21
Mass (M⊕)	1.00	6.78	317.83
Density (g/cm³)	5.51	2.40	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	126.48	0.037

Star Catalogue Identifiers

TIC

TIC 273773509

Gaia DR2

Gaia DR2 2078527986732237824

Gaia DR3

Gaia DR3 2078527986732237824

System

Kepler-1765

Percentile among Sub-Neptune cohort

Radius 2.495 R⊕ · percentile 40 / cohort 1978

Mass 6.780 M⊕ · percentile 37 / cohort 1978

Orbital period 10.42 d · percentile 36 / cohort 1946

Distance 764.46 pc · percentile 63 / cohort 1975

ESI 0.296 · percentile 27 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

10.419 days

Semi-major axis

0.0917 AU

Eccentricity

0.000

Inclination

86.74 °

Year Length

A year here lasts approximately 10.42 Earth days (2.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0917 AU.

Transit Fingerprint

Depth

0.071 %

Duration

3.007 h

Impact parameter b

0.126

Rp / R★

0.024257

Transit midpoint (BJD)

2,454,970.7481

Photometric dip

Transit produces a flux drop of 715 ppm lasting ≈ 3.01 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024257

Semi-major axis / stellar radius

28.880

Impact parameter (b)

0.126

Transit mid-time (BJD)

2,454,970.7481

Angular separation (arcsec)

0.12000

Eq. Temperature

855K

(582 °C)

Insolation (S⊕)

126.48

Earth = 1.00

Earth Similarity (ESI)

0.296

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-1765

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,692 K — cooler than the Sun (5,778 K)

Estimated Age

11.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.064 R☉

Stellar Mass

0.946 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

0.595 g/cm³

Metallicity ratio

[Fe/H]

Distance

764.46 parsec

Light-years 2,493.32 ly

V-band magnitude

15.04 mag

Voyager-speed travel 43,969,680 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.280 mas

Total Proper Motion

9.072 mas/yr

PM Right Ascension

0.86 mas/yr

PM Declination

-9.03 mas/yr

Galactic Cartesian (pc)

x = 0.344 · y = -0.646 · z = 0.681

Equatorial (J2000)

RA 298.01446° · Dec 42.95743°

Galactic ℓ, b

77.413° · 8.074°

Ecliptic λ, β

316.892° · 61.912°

HTM-20 index

1933861987