Key parameters at a glance

A radius of 2.69 Earth radii
A mass of 7.70 Earth masses
Surface gravity around 1.06 g
An orbital period of 25.873 days
Semi-major axis 0.1741 AU
Equilibrium temperature 667 K (394 °C)
Distance from Earth 4,033.11 light-years
Earth Similarity Index 0.369
Travel time at Voyager 1 speed 71,123,973 years

Kepler-1369 b Planet Profile

Physical Specs

Radius

2.69 R⊕

Radius (Jupiter)

0.240 R♃

Mass

7.70 M⊕

Mass (Jupiter)

0.024 M♃

Density

2.17 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.369

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#881of 1978

top 44.5%

This planet

2.69R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-181 b 2.69 R⊕ Kepler-417 c 2.69 R⊕ HD 28109 b 2.69 R⊕

Metric	Earth	Kepler-1369 b	Jupiter
Radius (R⊕)	1.00	2.69	11.21
Mass (M⊕)	1.00	7.70	317.83
Density (g/cm³)	5.51	2.17	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	37.16	0.037

Star Catalogue Identifiers

TIC

TIC 120686458

Gaia DR2

Gaia DR2 2103787101707694464

Gaia DR3

Gaia DR3 2103787101707694464

System

Kepler-1369

Percentile among Sub-Neptune cohort

Radius 2.690 R⊕ · percentile 55 / cohort 1978

Mass 7.700 M⊕ · percentile 51 / cohort 1978

Orbital period 25.87 d · percentile 70 / cohort 1946

Distance 1,236.56 pc · percentile 87 / cohort 1975

ESI 0.369 · percentile 46 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

25.873 days

Semi-major axis

0.1741 AU

Eccentricity

0.000

Inclination

89.71 °

Year Length

A year here lasts approximately 25.87 Earth days (7.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1741 AU.

Transit Fingerprint

Depth

0.069 %

Duration

5.451 h

Impact parameter b

0.196

Rp / R★

0.025023

Transit midpoint (BJD)

2,454,976.2794

Photometric dip

Transit produces a flux drop of 694 ppm lasting ≈ 5.45 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025023

Semi-major axis / stellar radius

39.080

Impact parameter (b)

0.196

Transit mid-time (BJD)

2,454,976.2794

Angular separation (arcsec)

0.14100

Eq. Temperature

667K

(394 °C)

Insolation (S⊕)

37.16

Earth = 1.00

Earth Similarity (ESI)

0.369

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

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1369

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,761 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.990 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.090 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,236.56 parsec

Light-years 4,033.11 ly

V-band magnitude

15.62 mag

Voyager-speed travel 71,123,973 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.780 mas

Total Proper Motion

3.414 mas/yr

PM Right Ascension

1.99 mas/yr

PM Declination

2.77 mas/yr

Galactic Cartesian (pc)

x = 0.206 · y = -0.727 · z = 0.655

Equatorial (J2000)

RA 285.79726° · Dec 40.93619°

Galactic ℓ, b

71.463° · 15.326°

Ecliptic λ, β

296.844° · 62.911°

HTM-20 index

1699316368