Key parameters at a glance

A radius of 6.59 Earth radii
A mass of 35.30 Earth masses
Surface gravity around 0.81 g
An orbital period of 3.290 days
Semi-major axis 0.0327 AU
Equilibrium temperature 540 K (267 °C)
Distance from Earth 844.68 light-years
Earth Similarity Index 0.304
Travel time at Voyager 1 speed 14,895,852 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1624 b Planet Profile

Physical Specs

Radius

6.59 R⊕

Radius (Jupiter)

0.588 R♃

Mass

35.30 M⊕

Mass (Jupiter)

0.111 M♃

Density

0.68 g/cm³

Surface Gravity

0.81 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.304

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

#231of 574

top 40.1%

This planet

6.59R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

K2-19 b 6.59 R⊕ TOI-5108 b 6.60 R⊕ TOI-4940 b 6.61 R⊕

Metric	Earth	Kepler-1624 b	Jupiter
Radius (R⊕)	1.00	6.59	11.21
Mass (M⊕)	1.00	35.30	317.83
Density (g/cm³)	5.51	0.68	1.33
Surface Gravity (g)	1.00	0.81	2.53
Insolation (S⊕)	1.00	6.01	0.037

Star Catalogue Identifiers

TIC

TIC 137683938

Gaia DR2

Gaia DR2 2051815759742763264

Gaia DR3

Gaia DR3 2051815759742763264

System

Kepler-1624

Percentile among Neptune-like cohort

Radius 6.590 R⊕ · percentile 60 / cohort 574

Mass 35.300 M⊕ · percentile 58 / cohort 574

Orbital period 3.29 d · percentile 5 / cohort 524

Distance 258.98 pc · percentile 45 / cohort 572

ESI 0.304 · percentile 51 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

3.290 days

Semi-major axis

0.0327 AU

Eccentricity

0.000

Inclination

89.68 °

Year Length

A year here lasts approximately 3.29 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0327 AU.

Transit Fingerprint

Depth

1.355 %

Duration

1.751 h

Impact parameter b

0.553

Rp / R★

0.109390

Transit midpoint (BJD)

2,456,290.9020

Photometric dip

Transit produces a flux drop of 13,553 ppm lasting ≈ 1.75 h.

Extended Orbital Architecture

Planet / star radius ratio

0.109390

Semi-major axis / stellar radius

13.530

Impact parameter (b)

0.553

Transit mid-time (BJD)

2,456,290.9020

Angular separation (arcsec)

0.12600

Eq. Temperature

540K

(267 °C)

Insolation (S⊕)

6.01

Earth = 1.00

Earth Similarity (ESI)

0.304

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. 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-1624

Spectral Class

M-type red dwarf

Effective Temperature

3,768 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.552 R☉

Stellar Mass

0.541 M☉

Metallicity [Fe/H]

0.27

Extended Stellar Properties

Surface gravity (log g)

4.685 dex

Stellar density

4.328 g/cm³

Metallicity ratio

[Fe/H]

Distance

258.98 parsec

Light-years 844.68 ly

V-band magnitude

16.60 mag

Voyager-speed travel 14,895,852 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

3.833 mas

Total Proper Motion

30.349 mas/yr

PM Right Ascension

-2.58 mas/yr

PM Declination

-30.24 mas/yr

Galactic Cartesian (pc)

x = 0.305 · y = -0.734 · z = 0.607

Equatorial (J2000)

RA 292.57986° · Dec 37.37626°

Galactic ℓ, b

70.452° · 9.056°

Ecliptic λ, β

305.247° · 58.084°

HTM-20 index

-2030809092