Key parameters at a glance

A radius of 1.06 Earth radii
A mass of 1.20 Earth masses
Surface gravity around 1.07 g
An orbital period of 2.716 days
Semi-major axis 0.0396 AU
Equilibrium temperature 1,360 K (1087 °C)
Distance from Earth 3,186.11 light-years
Earth Similarity Index 0.228
Travel time at Voyager 1 speed 56,187,110 years

Kepler-1594 b Planet Profile

Physical Specs

Radius

1.06 R⊕

Radius (Jupiter)

0.095 R♃

Mass

1.20 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.54 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.228

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

#270of 570

top 47.2%

This planet

1.06R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1200 b 1.06 R⊕ Kepler-316 b 1.06 R⊕ Kepler-1203 b 1.06 R⊕

Metric	Earth	Kepler-1594 b	Jupiter
Radius (R⊕)	1.00	1.06	11.21
Mass (M⊕)	1.00	1.20	317.83
Density (g/cm³)	5.51	5.54	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	672.41	0.037

Star Catalogue Identifiers

TIC

TIC 270695341

Gaia DR2

Gaia DR2 2128836308750694016

Gaia DR3

Gaia DR3 2128836308750694016

System

Kepler-1594

Percentile among Rocky Terrestrial cohort

Radius 1.060 R⊕ · percentile 51 / cohort 570

Mass 1.200 M⊕ · percentile 46 / cohort 570

Orbital period 2.72 d · percentile 31 / cohort 567

Distance 976.87 pc · percentile 93 / cohort 566

ESI 0.228 · percentile 19 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.716 days

Semi-major axis

0.0396 AU

Eccentricity

0.000

Inclination

87.67 °

Year Length

A year here lasts approximately 2.72 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0396 AU.

Transit Fingerprint

Depth

0.010 %

Duration

1.859 h

Impact parameter b

0.091

Rp / R★

0.009423

Transit midpoint (BJD)

2,454,965.3591

Photometric dip

Transit produces a flux drop of 99 ppm lasting ≈ 1.86 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009423

Semi-major axis / stellar radius

11.240

Impact parameter (b)

0.091

Transit mid-time (BJD)

2,454,965.3591

Angular separation (arcsec)

0.04050

Eq. Temperature

1,360K

(1087 °C)

Insolation (S⊕)

672.41

Earth = 1.00

Earth Similarity (ESI)

0.228

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-1594

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,946 K — hotter than the Sun (5,778 K)

Estimated Age

3.89 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.080 R☉

Stellar Mass

1.060 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.390 dex

Stellar density

3.638 g/cm³

Metallicity ratio

[Fe/H]

Distance

976.87 parsec

Light-years 3,186.11 ly

V-band magnitude

14.95 mag

Voyager-speed travel 56,187,110 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.995 mas

Total Proper Motion

2.923 mas/yr

PM Right Ascension

-2.91 mas/yr

PM Declination

-0.24 mas/yr

Galactic Cartesian (pc)

x = 0.268 · y = -0.614 · z = 0.743

Equatorial (J2000)

RA 293.62305° · Dec 47.96191°

Galactic ℓ, b

80.436° · 13.142°

Ecliptic λ, β

315.090° · 67.737°

HTM-20 index

-1774585463