Key parameters at a glance

A radius of 1.30 Earth radii
A mass of 2.24 Earth masses
Surface gravity around 1.33 g
An orbital period of 20.925 days
Semi-major axis 0.1516 AU
Equilibrium temperature 729 K (456 °C)
Distance from Earth 2,988.61 light-years
Earth Similarity Index 0.431
Travel time at Voyager 1 speed 52,704,131 years

Kepler-1568 b Planet Profile

Physical Specs

Radius

1.30 R⊕

Radius (Jupiter)

0.116 R♃

Mass

2.24 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.60 g/cm³

Surface Gravity

1.33 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.431

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

#1090of 1176

top 92.6%

This planet

1.30R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

TOI-206 b 1.30 R⊕ Kepler-796 b 1.30 R⊕ Kepler-1254 c 1.30 R⊕

Metric	Earth	Kepler-1568 b	Jupiter
Radius (R⊕)	1.00	1.30	11.21
Mass (M⊕)	1.00	2.24	317.83
Density (g/cm³)	5.51	5.60	1.33
Surface Gravity (g)	1.00	1.33	2.53
Insolation (S⊕)	1.00	72.57	0.037

Star Catalogue Identifiers

TIC

TIC 158984590

Gaia DR2

Gaia DR2 2127941413665428992

Gaia DR3

Gaia DR3 2127941413665428992

System

Kepler-1568

Percentile among Super-Earth cohort

Radius 1.300 R⊕ · percentile 7 / cohort 1176

Mass 2.240 M⊕ · percentile 7 / cohort 1176

Orbital period 20.93 d · percentile 86 / cohort 1164

Distance 916.31 pc · percentile 76 / cohort 1171

ESI 0.431 · percentile 65 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

20.925 days

Semi-major axis

0.1516 AU

Eccentricity

0.000

Inclination

89.51 °

Year Length

A year here lasts approximately 20.93 Earth days (5.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1516 AU.

Transit Fingerprint

Depth

0.011 %

Duration

6.617 h

Impact parameter b

0.201

Rp / R★

0.010416

Transit midpoint (BJD)

2,454,967.8950

Photometric dip

Transit produces a flux drop of 109 ppm lasting ≈ 6.62 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010416

Semi-major axis / stellar radius

24.390

Impact parameter (b)

0.201

Transit mid-time (BJD)

2,454,967.8950

Angular separation (arcsec)

0.16500

Eq. Temperature

729K

(456 °C)

Insolation (S⊕)

72.57

Earth = 1.00

Earth Similarity (ESI)

0.431

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-1568

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,956 K — hotter than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.190 R☉

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.320 dex

Stellar density

0.590 g/cm³

Metallicity ratio

[Fe/H]

Distance

916.31 parsec

Light-years 2,988.61 ly

V-band magnitude

14.14 mag

Voyager-speed travel 52,704,131 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.063 mas

Total Proper Motion

10.130 mas/yr

PM Right Ascension

1.85 mas/yr

PM Declination

-9.96 mas/yr

Galactic Cartesian (pc)

x = 0.220 · y = -0.634 · z = 0.742

Equatorial (J2000)

RA 289.18268° · Dec 47.87333°

Galactic ℓ, b

79.072° · 15.809°

Ecliptic λ, β

307.593° · 68.823°

HTM-20 index

-480575336