Key parameters at a glance

A radius of 2.29 Earth radii
A mass of 5.86 Earth masses
Surface gravity around 1.12 g
An orbital period of 13.223 days
Semi-major axis 0.1077 AU
Equilibrium temperature 740 K (467 °C)
Distance from Earth 4,384.48 light-years
Earth Similarity Index 0.354
Travel time at Voyager 1 speed 77,320,344 years

Kepler-1922 b Planet Profile

Physical Specs

Radius

2.29 R⊕

Radius (Jupiter)

0.204 R♃

Mass

5.86 M⊕

Mass (Jupiter)

0.018 M♃

Density

2.68 g/cm³

Surface Gravity

1.12 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.354

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

#1518of 1978

top 76.7%

This planet

2.29R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-379 c 2.29 R⊕ Kepler-319 d 2.29 R⊕ Kepler-626 b 2.29 R⊕

Metric	Earth	Kepler-1922 b	Jupiter
Radius (R⊕)	1.00	2.29	11.21
Mass (M⊕)	1.00	5.86	317.83
Density (g/cm³)	5.51	2.68	1.33
Surface Gravity (g)	1.00	1.12	2.53
Insolation (S⊕)	1.00	71.11	0.037

Star Catalogue Identifiers

TIC

TIC 137548365

Gaia DR2

Gaia DR2 2051898055621339648

Gaia DR3

Gaia DR3 2051898055621339648

System

Kepler-1922

Percentile among Sub-Neptune cohort

Radius 2.291 R⊕ · percentile 23 / cohort 1978

Mass 5.860 M⊕ · percentile 22 / cohort 1978

Orbital period 13.22 d · percentile 45 / cohort 1946

Distance 1,344.29 pc · percentile 90 / cohort 1975

ESI 0.354 · percentile 42 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.223 days

Semi-major axis

0.1077 AU

Eccentricity

0.000

Inclination

83.99 °

Year Length

A year here lasts approximately 13.22 Earth days (3.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1077 AU.

Transit Fingerprint

Depth

0.026 %

Duration

4.337 h

Impact parameter b

0.134

Rp / R★

0.015643

Transit midpoint (BJD)

2,454,977.2913

Photometric dip

Transit produces a flux drop of 262 ppm lasting ≈ 4.34 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015643

Semi-major axis / stellar radius

27.280

Impact parameter (b)

0.134

Transit mid-time (BJD)

2,454,977.2913

Angular separation (arcsec)

0.08010

Eq. Temperature

740K

(467 °C)

Insolation (S⊕)

71.11

Earth = 1.00

Earth Similarity (ESI)

0.354

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-1922

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,931 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.863 R☉

Stellar Mass

0.953 M☉

Metallicity [Fe/H]

-0.28

Extended Stellar Properties

Surface gravity (log g)

4.545 dex

Stellar density

0.079 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,344.29 parsec

Light-years 4,384.48 ly

V-band magnitude

15.39 mag

Voyager-speed travel 77,320,344 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.716 mas

Total Proper Motion

3.245 mas/yr

PM Right Ascension

1.86 mas/yr

PM Declination

2.66 mas/yr

Galactic Cartesian (pc)

x = 0.299 · y = -0.729 · z = 0.616

Equatorial (J2000)

RA 292.33037° · Dec 37.99707°

Galactic ℓ, b

70.920° · 9.515°

Ecliptic λ, β

305.230° · 58.735°

HTM-20 index

1254089931