Key parameters at a glance

A radius of 2.04 Earth radii
A mass of 4.82 Earth masses
Surface gravity around 1.16 g
An orbital period of 10.665 days
Semi-major axis 0.0980 AU
Equilibrium temperature 865 K (592 °C)
Distance from Earth 3,388.73 light-years
Earth Similarity Index 0.315
Travel time at Voyager 1 speed 59,760,219 years

1 sibling around Kepler-365

Kepler-365 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-365 b this	Sub-Neptune	2.04	4.82	10.665	865	2014
Kepler-365 c	Super-Earth	1.64	3.33	17.784	729	2014

Kepler-365 b Planet Profile

Physical Specs

Radius

2.04 R⊕

Radius (Jupiter)

0.182 R♃

Mass

4.82 M⊕

Mass (Jupiter)

0.015 M♃

Density

3.12 g/cm³

Surface Gravity

1.16 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.315

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1904of 1978

top 96.2%

This planet

2.04R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-2081 b 2.04 R⊕ Kepler-230 c 2.04 R⊕ Kepler-48 d 2.04 R⊕

Metric	Earth	Kepler-365 b	Jupiter
Radius (R⊕)	1.00	2.04	11.21
Mass (M⊕)	1.00	4.82	317.83
Density (g/cm³)	5.51	3.12	1.33
Surface Gravity (g)	1.00	1.16	2.53
Insolation (S⊕)	1.00	132.15	0.037

Star Catalogue Identifiers

TIC

TIC 27530849

System

Kepler-365

Percentile among Sub-Neptune cohort

Radius 2.040 R⊕ · percentile 3 / cohort 1978

Mass 4.820 M⊕ · percentile 5 / cohort 1978

Orbital period 10.66 d · percentile 37 / cohort 1946

Distance 1,038.99 pc · percentile 81 / cohort 1975

ESI 0.315 · percentile 32 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

10.665 days

Semi-major axis

0.0980 AU

Eccentricity

0.000

Inclination

89.29 °

Year Length

A year here lasts approximately 10.66 Earth days (2.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0980 AU.

Transit Fingerprint

Depth

0.029 %

Duration

3.293 h

Impact parameter b

0.870

Rp / R★

0.015773

Transit midpoint (BJD)

2,454,965.0099

Photometric dip

Transit produces a flux drop of 293 ppm lasting ≈ 3.29 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015773

Semi-major axis / stellar radius

16.000

Impact parameter (b)

0.870

Transit mid-time (BJD)

2,454,965.0099

Angular separation (arcsec)

0.09430

Eq. Temperature

865K

(592 °C)

Insolation (S⊕)

132.15

Earth = 1.00

Earth Similarity (ESI)

0.315

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

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-365

Spectral Class

F-type yellow-white

Effective Temperature

6,012 K — hotter than the Sun (5,778 K)

Estimated Age

4.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.048 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

-0.22

Extended Stellar Properties

Surface gravity (log g)

4.434 dex

Stellar density

2.006 g/cm³

Metallicity ratio

[M/H]

Distance

1,038.99 parsec

Light-years 3,388.73 ly

V-band magnitude

14.77 mag

Voyager-speed travel 59,760,219 yr