Key parameters at a glance

A radius of 3.17 Earth radii
A mass of 10.20 Earth masses
Surface gravity around 1.02 g
An orbital period of 126.557 days
Semi-major axis 0.5266 AU
Equilibrium temperature 524 K (251 °C)
Distance from Earth 2,841.13 light-years
Earth Similarity Index 0.434
Travel time at Voyager 1 speed 50,103,358 years

Kepler-1936 b Planet Profile

Physical Specs

Radius

3.17 R⊕

Radius (Jupiter)

0.282 R♃

Mass

10.20 M⊕

Mass (Jupiter)

0.032 M♃

Density

1.77 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.434

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

#385of 1978

top 19.4%

This planet

3.17R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1786 b 3.16 R⊕ Kepler-253 d 3.17 R⊕ KMT-2021-BLG-2609L b 3.17 R⊕

Metric	Earth	Kepler-1936 b	Jupiter
Radius (R⊕)	1.00	3.17	11.21
Mass (M⊕)	1.00	10.20	317.83
Density (g/cm³)	5.51	1.77	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	9.40	0.037

Star Catalogue Identifiers

TIC

TIC 159451957

Gaia DR2

Gaia DR2 2127007584695708416

Gaia DR3

Gaia DR3 2127007584695708416

System

Kepler-1936

Percentile among Sub-Neptune cohort

Radius 3.166 R⊕ · percentile 81 / cohort 1978

Mass 10.200 M⊕ · percentile 74 / cohort 1978

Orbital period 126.56 d · percentile 96 / cohort 1946

Distance 871.10 pc · percentile 71 / cohort 1975

ESI 0.434 · percentile 59 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

126.557 days

Semi-major axis

0.5266 AU

Eccentricity

0.000

Inclination

88.63 °

Year Length

A year here lasts approximately 126.56 Earth days (34.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5266 AU.

Transit Fingerprint

Depth

0.036 %

Duration

7.923 h

Impact parameter b

0.962

Rp / R★

0.022239

Transit midpoint (BJD)

2,454,978.6936

Photometric dip

Transit produces a flux drop of 358 ppm lasting ≈ 7.92 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022239

Semi-major axis / stellar radius

40.400

Impact parameter (b)

0.962

Transit mid-time (BJD)

2,454,978.6936

Angular separation (arcsec)

0.60500

Eq. Temperature

524K

(251 °C)

Insolation (S⊕)

9.40

Earth = 1.00

Earth Similarity (ESI)

0.434

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

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-1936

Spectral Class

F-type yellow-white

Effective Temperature

6,501 K — hotter than the Sun (5,778 K)

Estimated Age

2.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.854 R☉

Stellar Mass

1.419 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.054 dex

Stellar density

0.078 g/cm³

Metallicity ratio

[Fe/H]

Distance

871.10 parsec

Light-years 2,841.13 ly

V-band magnitude

13.39 mag

Voyager-speed travel 50,103,358 yr

Multi-band Host Photometry — 15 bands

Astrometric Data

Parallax

1.119 mas

Total Proper Motion

1.219 mas/yr

PM Right Ascension

1.22 mas/yr

PM Declination

-0.02 mas/yr

Galactic Cartesian (pc)

x = 0.251 · y = -0.663 · z = 0.705

Equatorial (J2000)

RA 290.73001° · Dec 44.83613°

Galactic ℓ, b

76.654° · 13.597°

Ecliptic λ, β

307.420° · 65.604°

HTM-20 index

1508727452