Key parameters at a glance

A radius of 1.49 Earth radii
A mass of 2.83 Earth masses
Surface gravity around 1.27 g
An orbital period of 4.838 days
Semi-major axis 0.0316 AU
Equilibrium temperature 354 K (81 °C)
Distance from Earth 257.31 light-years
Earth Similarity Index 0.791
Travel time at Voyager 1 speed 4,537,599 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1582 b Planet Profile

Physical Specs

Radius

1.49 R⊕

Radius (Jupiter)

0.133 R♃

Mass

2.83 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.70 g/cm³

Surface Gravity

1.27 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.791

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

#766of 1176

top 65.1%

This planet

1.49R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-174 c 1.49 R⊕ TOI-431 c 1.49 R⊕ Kepler-400 c 1.49 R⊕

Metric	Earth	Kepler-1582 b	Jupiter
Radius (R⊕)	1.00	1.49	11.21
Mass (M⊕)	1.00	2.83	317.83
Density (g/cm³)	5.51	4.70	1.33
Surface Gravity (g)	1.00	1.27	2.53
Insolation (S⊕)	1.00	2.50	0.037

Star Catalogue Identifiers

TIC

TIC 122065885

Gaia DR2

Gaia DR2 2101449265111030912

Gaia DR3

Gaia DR3 2101449265111030912

System

Kepler-1582

Percentile among Super-Earth cohort

Radius 1.490 R⊕ · percentile 34 / cohort 1176

Mass 2.830 M⊕ · percentile 32 / cohort 1176

Orbital period 4.84 d · percentile 39 / cohort 1164

Distance 78.89 pc · percentile 15 / cohort 1171

ESI 0.791 · percentile 89 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.838 days

Semi-major axis

0.0316 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 4.84 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0316 AU.

Transit Fingerprint

Depth

0.154 %

Duration

1.260 h

Impact parameter b

0.261

Rp / R★

0.044725

Transit midpoint (BJD)

2,454,968.1468

Photometric dip

Transit produces a flux drop of 1,544 ppm lasting ≈ 1.26 h.

Extended Orbital Architecture

Planet / star radius ratio

0.044725

Semi-major axis / stellar radius

34.950

Impact parameter (b)

0.261

Transit mid-time (BJD)

2,454,968.1468

Angular separation (arcsec)

0.40100

Eq. Temperature

354K

(81 °C)

Insolation (S⊕)

2.50

Earth = 1.00

Earth Similarity (ESI)

0.791

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.

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-1582

Spectral Class

M-type red dwarf

Effective Temperature

3,208 K — cooler than the Sun (5,778 K)

Estimated Age

7.76 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.300 R☉

Stellar Mass

0.280 M☉

Metallicity [Fe/H]

0.48

Extended Stellar Properties

Surface gravity (log g)

4.930 dex

Stellar density

26.127 g/cm³

Metallicity ratio

[Fe/H]

Distance

78.89 parsec

Light-years 257.31 ly

V-band magnitude

17.96 mag

Voyager-speed travel 4,537,599 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

12.648 mas

Total Proper Motion

121.707 mas/yr

PM Right Ascension

-20.80 mas/yr

PM Declination

-119.92 mas/yr

Galactic Cartesian (pc)

x = 0.250 · y = -0.710 · z = 0.658

Equatorial (J2000)

RA 289.37654° · Dec 41.15808°

Galactic ℓ, b

72.798° · 12.947°

Ecliptic λ, β

302.645° · 62.418°

HTM-20 index

-1342899163