Key parameters at a glance

A radius of 2.38 Earth radii
A mass of 6.26 Earth masses
Surface gravity around 1.10 g
An orbital period of 95.611 days
Semi-major axis 0.4267 AU
Equilibrium temperature 421 K (148 °C)
Distance from Earth 3,392.35 light-years
Earth Similarity Index 0.586
Travel time at Voyager 1 speed 59,824,063 years

Kepler-1824 b Planet Profile

Physical Specs

Radius

2.38 R⊕

Radius (Jupiter)

0.212 R♃

Mass

6.26 M⊕

Mass (Jupiter)

0.020 M♃

Density

2.55 g/cm³

Surface Gravity

1.10 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.586

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1363of 1978

top 68.9%

This planet

2.38R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1781 b 2.38 R⊕ Kepler-166 c 2.38 R⊕ Kepler-1249 b 2.38 R⊕

Metric	Earth	Kepler-1824 b	Jupiter
Radius (R⊕)	1.00	2.38	11.21
Mass (M⊕)	1.00	6.26	317.83
Density (g/cm³)	5.51	2.55	1.33
Surface Gravity (g)	1.00	1.10	2.53
Insolation (S⊕)	1.00	7.45	0.037

Star Catalogue Identifiers

TIC

TIC 360023295

Gaia DR2

Gaia DR2 2076833055197955584

Gaia DR3

Gaia DR3 2076833055197955584

System

Kepler-1824

Percentile among Sub-Neptune cohort

Radius 2.381 R⊕ · percentile 31 / cohort 1978

Mass 6.260 M⊕ · percentile 29 / cohort 1978

Orbital period 95.61 d · percentile 93 / cohort 1946

Distance 1,040.10 pc · percentile 81 / cohort 1975

ESI 0.586 · percentile 81 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

95.611 days

Semi-major axis

0.4267 AU

Eccentricity

0.000

Inclination

89.97 °

Year Length

A year here lasts approximately 95.61 Earth days (26.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4267 AU.

Transit Fingerprint

Depth

0.049 %

Duration

7.374 h

Impact parameter b

0.193

Rp / R★

0.020097

Transit midpoint (BJD)

2,454,971.3566

Photometric dip

Transit produces a flux drop of 487 ppm lasting ≈ 7.37 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020097

Semi-major axis / stellar radius

99.390

Impact parameter (b)

0.193

Transit mid-time (BJD)

2,454,971.3566

Angular separation (arcsec)

0.41000

Eq. Temperature

421K

(148 °C)

Insolation (S⊕)

7.45

Earth = 1.00

Earth Similarity (ESI)

0.586

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

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1824

Spectral Class

F-type yellow-white

Effective Temperature

6,002 K — hotter than the Sun (5,778 K)

Estimated Age

0.33 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.081 R☉

Stellar Mass

1.135 M☉

Metallicity [Fe/H]

0.20

Extended Stellar Properties

Surface gravity (log g)

4.424 dex

Stellar density

2.032 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,040.10 parsec

Light-years 3,392.35 ly

V-band magnitude

14.98 mag

Voyager-speed travel 59,824,063 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.933 mas

Total Proper Motion

10.846 mas/yr

PM Right Ascension

-9.50 mas/yr

PM Declination

-5.23 mas/yr

Galactic Cartesian (pc)

x = 0.338 · y = -0.672 · z = 0.659

Equatorial (J2000)

RA 296.70720° · Dec 41.20362°

Galactic ℓ, b

75.389° · 8.054°

Ecliptic λ, β

313.634° · 60.660°

HTM-20 index

-968887504