Key parameters at a glance

A radius of 1.33 Earth radii
A mass of 2.33 Earth masses
Surface gravity around 1.32 g
An orbital period of 9.406 days
Semi-major axis 0.0875 AU
Equilibrium temperature 981 K (708 °C)
Distance from Earth 3,347.93 light-years
Earth Similarity Index 0.316
Travel time at Voyager 1 speed 59,040,674 years

Kepler-1587 b Planet Profile

Physical Specs

Radius

1.33 R⊕

Radius (Jupiter)

0.119 R♃

Mass

2.33 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.44 g/cm³

Surface Gravity

1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.316

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

#1022of 1176

top 86.8%

This planet

1.33R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-393 c 1.33 R⊕ Kepler-286 d 1.33 R⊕ Kepler-220 e 1.33 R⊕

Metric	Earth	Kepler-1587 b	Jupiter
Radius (R⊕)	1.00	1.33	11.21
Mass (M⊕)	1.00	2.33	317.83
Density (g/cm³)	5.51	5.44	1.33
Surface Gravity (g)	1.00	1.32	2.53
Insolation (S⊕)	1.00	254.70	0.037

Star Catalogue Identifiers

TIC

TIC 26656768

Gaia DR2

Gaia DR2 2129838139942109440

Gaia DR3

Gaia DR3 2129838139942109440

System

Kepler-1587

Percentile among Super-Earth cohort

Radius 1.330 R⊕ · percentile 11 / cohort 1176

Mass 2.330 M⊕ · percentile 11 / cohort 1176

Orbital period 9.41 d · percentile 63 / cohort 1164

Distance 1,026.48 pc · percentile 82 / cohort 1171

ESI 0.316 · percentile 40 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

9.406 days

Semi-major axis

0.0875 AU

Eccentricity

0.000

Inclination

88.33 °

Year Length

A year here lasts approximately 9.41 Earth days (2.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0875 AU.

Transit Fingerprint

Depth

0.008 %

Duration

5.161 h

Impact parameter b

0.397

Rp / R★

0.009532

Transit midpoint (BJD)

2,454,970.7175

Photometric dip

Transit produces a flux drop of 80 ppm lasting ≈ 5.16 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009532

Semi-major axis / stellar radius

7.770

Impact parameter (b)

0.397

Transit mid-time (BJD)

2,454,970.7175

Angular separation (arcsec)

0.08520

Eq. Temperature

981K

(708 °C)

Insolation (S⊕)

254.70

Earth = 1.00

Earth Similarity (ESI)

0.316

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-1587

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,933 K — hotter than the Sun (5,778 K)

Estimated Age

5.01 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.220 R☉

Stellar Mass

1.080 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.300 dex

Stellar density

0.400 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,026.48 parsec

Light-years 3,347.93 ly

V-band magnitude

14.17 mag

Voyager-speed travel 59,040,674 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.945 mas

Total Proper Motion

6.675 mas/yr

PM Right Ascension

0.58 mas/yr

PM Declination

-6.65 mas/yr

Galactic Cartesian (pc)

x = 0.250 · y = -0.597 · z = 0.762

Equatorial (J2000)

RA 292.67773° · Dec 49.66387°

Galactic ℓ, b

81.739° · 14.439°

Ecliptic λ, β

315.554° · 69.541°

HTM-20 index

777366789