Key parameters at a glance

A radius of 4.63 Earth radii
A mass of 19.40 Earth masses
Surface gravity around 0.90 g
An orbital period of 3.751 days
Semi-major axis 0.0484 AU
Equilibrium temperature 1,129 K (856 °C)
Distance from Earth 2,814.85 light-years
Earth Similarity Index 0.169
Travel time at Voyager 1 speed 49,639,823 years

Kepler-564 b Planet Profile

Physical Specs

Radius

4.63 R⊕

Radius (Jupiter)

0.413 R♃

Mass

19.40 M⊕

Mass (Jupiter)

0.061 M♃

Density

1.07 g/cm³

Surface Gravity

0.90 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.169

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

#442of 574

top 76.8%

This planet

4.63R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-1136 d 4.63 R⊕ Kepler-1989 b 4.62 R⊕ Kepler-222 c 4.64 R⊕

Metric	Earth	Kepler-564 b	Jupiter
Radius (R⊕)	1.00	4.63	11.21
Mass (M⊕)	1.00	19.40	317.83
Density (g/cm³)	5.51	1.07	1.33
Surface Gravity (g)	1.00	0.90	2.53
Insolation (S⊕)	1.00	389.40	0.037

Star Catalogue Identifiers

TIC

TIC 272838324

Gaia DR2

Gaia DR2 2080326444152019456

Gaia DR3

Gaia DR3 2080326444152019456

System

Kepler-564

Percentile among Neptune-like cohort

Radius 4.630 R⊕ · percentile 23 / cohort 574

Mass 19.400 M⊕ · percentile 26 / cohort 574

Orbital period 3.75 d · percentile 10 / cohort 524

Distance 863.04 pc · percentile 69 / cohort 572

ESI 0.169 · percentile 20 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

3.751 days

Semi-major axis

0.0484 AU

Eccentricity

0.000

Inclination

90.00 °

Year Length

A year here lasts approximately 3.75 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0484 AU.

Transit Fingerprint

Depth

0.240 %

Duration

1.959 h

Impact parameter b

0.090

Rp / R★

0.045644

Transit midpoint (BJD)

2,455,004.1518

Photometric dip

Transit produces a flux drop of 2,398 ppm lasting ≈ 1.96 h.

Extended Orbital Architecture

Planet / star radius ratio

0.045644

Semi-major axis / stellar radius

15.393

Impact parameter (b)

0.090

Transit mid-time (BJD)

2,455,004.1518

Angular separation (arcsec)

0.05610

Eq. Temperature

1,129K

(856 °C)

Insolation (S⊕)

389.40

Earth = 1.00

Earth Similarity (ESI)

0.169

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-564

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,626 K — cooler than the Sun (5,778 K)

Estimated Age

4.27 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.920 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

4.768 g/cm³

Metallicity ratio

[Fe/H]

Distance

863.04 parsec

Light-years 2,814.85 ly

V-band magnitude

14.88 mag

Voyager-speed travel 49,639,823 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.130 mas

Total Proper Motion

7.037 mas/yr

PM Right Ascension

-4.76 mas/yr

PM Declination

-5.18 mas/yr

Galactic Cartesian (pc)

x = 0.310 · y = -0.613 · z = 0.727

Equatorial (J2000)

RA 296.83837° · Dec 46.62639°

Galactic ℓ, b

80.247° · 10.592°

Ecliptic λ, β

318.625° · 65.597°

HTM-20 index

-2114747873