Key parameters at a glance

A radius of 3.54 Earth radii
A mass of 12.30 Earth masses
Surface gravity around 0.98 g
An orbital period of 70.967 days
Semi-major axis 0.3392 AU
Equilibrium temperature 438 K (165 °C)
Distance from Earth 1,245.18 light-years
Earth Similarity Index 0.483
Travel time at Voyager 1 speed 21,958,670 years

Kepler-1524 b Planet Profile

Physical Specs

Radius

3.54 R⊕

Radius (Jupiter)

0.316 R♃

Mass

12.30 M⊕

Mass (Jupiter)

0.039 M♃

Density

1.52 g/cm³

Surface Gravity

0.98 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.483

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

#158of 1978

top 7.9%

This planet

3.54R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-802 b 3.54 R⊕ Kepler-1316 b 3.54 R⊕ HIP 41378 d 3.54 R⊕

Metric	Earth	Kepler-1524 b	Jupiter
Radius (R⊕)	1.00	3.54	11.21
Mass (M⊕)	1.00	12.30	317.83
Density (g/cm³)	5.51	1.52	1.33
Surface Gravity (g)	1.00	0.98	2.53
Insolation (S⊕)	1.00	8.44	0.037

Star Catalogue Identifiers

TIC

TIC 138477646

Gaia DR2

Gaia DR2 2052480728067657600

Gaia DR3

Gaia DR3 2052480728067657600

System

Kepler-1524

Percentile among Sub-Neptune cohort

Radius 3.540 R⊕ · percentile 92 / cohort 1978

Mass 12.300 M⊕ · percentile 85 / cohort 1978

Orbital period 70.97 d · percentile 91 / cohort 1946

Distance 381.77 pc · percentile 40 / cohort 1975

ESI 0.483 · percentile 68 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

70.967 days

Semi-major axis

0.3392 AU

Eccentricity

0.000

Inclination

89.54 °

Year Length

A year here lasts approximately 70.97 Earth days (19.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3392 AU.

Transit Fingerprint

Depth

0.078 %

Duration

6.899 h

Impact parameter b

0.047

Rp / R★

0.026141

Transit midpoint (BJD)

2,455,015.6674

Photometric dip

Transit produces a flux drop of 785 ppm lasting ≈ 6.90 h.

Extended Orbital Architecture

Planet / star radius ratio

0.026141

Semi-major axis / stellar radius

80.550

Impact parameter (b)

0.047

Transit mid-time (BJD)

2,455,015.6674

Angular separation (arcsec)

0.88800

Eq. Temperature

438K

(165 °C)

Insolation (S⊕)

8.44

Earth = 1.00

Earth Similarity (ESI)

0.483

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

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-1524

Spectral Class

F-type yellow-white

Effective Temperature

6,179 K — hotter than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.250 R☉

Stellar Mass

1.170 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.310 dex

Stellar density

1.963 g/cm³

Metallicity ratio

[Fe/H]

Distance

381.77 parsec

Light-years 1,245.18 ly

V-band magnitude

12.80 mag

Voyager-speed travel 21,958,670 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.591 mas

Total Proper Motion

8.397 mas/yr

PM Right Ascension

-5.33 mas/yr

PM Declination

6.49 mas/yr

Galactic Cartesian (pc)

x = 0.312 · y = -0.705 · z = 0.636

Equatorial (J2000)

RA 293.88536° · Dec 39.51983°

Galactic ℓ, b

72.855° · 9.141°

Ecliptic λ, β

308.401° · 59.815°

HTM-20 index

1172468273