Key parameters at a glance

A radius of 3.16 Earth radii
A mass of 10.10 Earth masses
Surface gravity around 1.01 g
An orbital period of 34.189 days
Semi-major axis 0.1978 AU
Equilibrium temperature 526 K (253 °C)
Distance from Earth 2,081.86 light-years
Earth Similarity Index 0.432
Travel time at Voyager 1 speed 36,713,546 years

Kepler-569 b Planet Profile

Physical Specs

Radius

3.16 R⊕

Radius (Jupiter)

0.282 R♃

Mass

10.10 M⊕

Mass (Jupiter)

0.032 M♃

Density

1.76 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.432

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

#387of 1978

top 19.5%

This planet

3.16R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 134060 b 3.16 R⊕ Kepler-619 b 3.16 R⊕ Kepler-222 b 3.16 R⊕

Metric	Earth	Kepler-569 b	Jupiter
Radius (R⊕)	1.00	3.16	11.21
Mass (M⊕)	1.00	10.10	317.83
Density (g/cm³)	5.51	1.76	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	19.31	0.037

Star Catalogue Identifiers

TIC

TIC 48353203

Gaia DR2

Gaia DR2 2131729780976557952

Gaia DR3

Gaia DR3 2131729780976557952

System

Kepler-569

Percentile among Sub-Neptune cohort

Radius 3.160 R⊕ · percentile 80 / cohort 1978

Mass 10.100 M⊕ · percentile 73 / cohort 1978

Orbital period 34.19 d · percentile 77 / cohort 1946

Distance 638.30 pc · percentile 56 / cohort 1975

ESI 0.432 · percentile 59 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

34.189 days

Semi-major axis

0.1978 AU

Eccentricity

0.000

Inclination

89.93 °

Year Length

A year here lasts approximately 34.19 Earth days (9.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1978 AU.

Transit Fingerprint

Depth

0.106 %

Duration

5.318 h

Impact parameter b

0.836

Rp / R★

0.030551

Transit midpoint (BJD)

2,455,026.3888

Photometric dip

Transit produces a flux drop of 1,063 ppm lasting ≈ 5.32 h.

Extended Orbital Architecture

Planet / star radius ratio

0.030551

Semi-major axis / stellar radius

50.370

Impact parameter (b)

0.836

Transit mid-time (BJD)

2,455,026.3888

Angular separation (arcsec)

0.31000

Eq. Temperature

526K

(253 °C)

Insolation (S⊕)

19.31

Earth = 1.00

Earth Similarity (ESI)

0.432

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-569

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,616 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.930 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.480 dex

Stellar density

1.130 g/cm³

Metallicity ratio

[Fe/H]

Distance

638.30 parsec

Light-years 2,081.86 ly

V-band magnitude

14.24 mag

Voyager-speed travel 36,713,546 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.538 mas

Total Proper Motion

7.293 mas/yr

PM Right Ascension

-5.26 mas/yr

PM Declination

5.05 mas/yr

Galactic Cartesian (pc)

x = 0.155 · y = -0.644 · z = 0.750

Equatorial (J2000)

RA 283.50722° · Dec 48.55263°

Galactic ℓ, b

78.303° · 19.580°

Ecliptic λ, β

297.868° · 70.688°

HTM-20 index

1892090127