Key parameters at a glance

A radius of 1.79 Earth radii
A mass of 3.86 Earth masses
Surface gravity around 1.20 g
An orbital period of 3.583 days
Semi-major axis 0.0445 AU
Equilibrium temperature 1,064 K (791 °C)
Distance from Earth 3,080.43 light-years
Earth Similarity Index 0.264
Travel time at Voyager 1 speed 54,323,367 years

Kepler-1585 b Planet Profile

Physical Specs

Radius

1.79 R⊕

Radius (Jupiter)

0.160 R♃

Mass

3.86 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.70 g/cm³

Surface Gravity

1.20 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.264

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

#271of 1176

top 23.0%

This planet

1.79R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-376 c 1.79 R⊕ Kepler-272 c 1.79 R⊕ Kepler-204 c 1.79 R⊕

Metric	Earth	Kepler-1585 b	Jupiter
Radius (R⊕)	1.00	1.79	11.21
Mass (M⊕)	1.00	3.86	317.83
Density (g/cm³)	5.51	3.70	1.33
Surface Gravity (g)	1.00	1.20	2.53
Insolation (S⊕)	1.00	182.94	0.037

Star Catalogue Identifiers

TIC

TIC 272272564

Gaia DR2

Gaia DR2 2079700100481104000

Gaia DR3

Gaia DR3 2079700100481104000

System

Kepler-1585

Percentile among Super-Earth cohort

Radius 1.790 R⊕ · percentile 76 / cohort 1176

Mass 3.860 M⊕ · percentile 70 / cohort 1176

Orbital period 3.58 d · percentile 27 / cohort 1164

Distance 944.47 pc · percentile 78 / cohort 1171

ESI 0.264 · percentile 28 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.583 days

Semi-major axis

0.0445 AU

Eccentricity

0.000

Inclination

89.55 °

Year Length

A year here lasts approximately 3.58 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0445 AU.

Transit Fingerprint

Depth

0.040 %

Duration

1.541 h

Impact parameter b

0.143

Rp / R★

0.018096

Transit midpoint (BJD)

2,454,967.9491

Photometric dip

Transit produces a flux drop of 397 ppm lasting ≈ 1.54 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018096

Semi-major axis / stellar radius

18.110

Impact parameter (b)

0.143

Transit mid-time (BJD)

2,454,967.9491

Angular separation (arcsec)

0.04710

Eq. Temperature

1,064K

(791 °C)

Insolation (S⊕)

182.94

Earth = 1.00

Earth Similarity (ESI)

0.264

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-1585

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,538 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.910 R☉

Stellar Mass

0.940 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

8.051 g/cm³

Metallicity ratio

[Fe/H]

Distance

944.47 parsec

Light-years 3,080.43 ly

V-band magnitude

16.33 mag

Voyager-speed travel 54,323,367 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.032 mas

Total Proper Motion

10.087 mas/yr

PM Right Ascension

-5.16 mas/yr

PM Declination

-8.67 mas/yr

Galactic Cartesian (pc)

x = 0.314 · y = -0.640 · z = 0.702

Equatorial (J2000)

RA 296.15899° · Dec 44.56305°

Galactic ℓ, b

78.173° · 10.026°

Ecliptic λ, β

315.594° · 63.919°

HTM-20 index

-1972053881