Key parameters at a glance

A radius of 2.12 Earth radii
A mass of 5.13 Earth masses
Surface gravity around 1.14 g
An orbital period of 4.626 days
Semi-major axis 0.0516 AU
Equilibrium temperature 1,012 K (739 °C)
Distance from Earth 2,747.84 light-years
Earth Similarity Index 0.263
Travel time at Voyager 1 speed 48,458,124 years

Kepler-1942 b Planet Profile

Physical Specs

Radius

2.12 R⊕

Radius (Jupiter)

0.189 R♃

Mass

5.13 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.97 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.263

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

#1800of 1978

top 91.0%

This planet

2.12R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1880 b 2.12 R⊕ K2-177 b 2.12 R⊕ K2-412 b 2.12 R⊕

Metric	Earth	Kepler-1942 b	Jupiter
Radius (R⊕)	1.00	2.12	11.21
Mass (M⊕)	1.00	5.13	317.83
Density (g/cm³)	5.51	2.97	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	247.34	0.037

Star Catalogue Identifiers

TIC

TIC 271350547

Gaia DR2

Gaia DR2 2079825273006700160

Gaia DR3

Gaia DR3 2079825273006700160

System

Kepler-1942

Percentile among Sub-Neptune cohort

Radius 2.117 R⊕ · percentile 9 / cohort 1978

Mass 5.130 M⊕ · percentile 10 / cohort 1978

Orbital period 4.63 d · percentile 11 / cohort 1946

Distance 842.49 pc · percentile 68 / cohort 1975

ESI 0.263 · percentile 19 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

4.626 days

Semi-major axis

0.0516 AU

Eccentricity

0.000

Inclination

88.90 °

Year Length

A year here lasts approximately 4.63 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0516 AU.

Transit Fingerprint

Depth

0.035 %

Duration

0.560 h

Impact parameter b

0.302

Rp / R★

0.018932

Transit midpoint (BJD)

2,454,967.6816

Photometric dip

Transit produces a flux drop of 347 ppm lasting ≈ 0.56 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018932

Semi-major axis / stellar radius

38.600

Impact parameter (b)

0.302

Transit mid-time (BJD)

2,454,967.6816

Angular separation (arcsec)

0.06120

Eq. Temperature

1,012K

(739 °C)

Insolation (S⊕)

247.34

Earth = 1.00

Earth Similarity (ESI)

0.263

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1942

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,834 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.797 R☉

Stellar Mass

0.852 M☉

Metallicity [Fe/H]

-0.50

Extended Stellar Properties

Surface gravity (log g)

4.566 dex

Stellar density

50.660 g/cm³

Metallicity ratio

[Fe/H]

Distance

842.49 parsec

Light-years 2,747.84 ly

V-band magnitude

14.91 mag

Voyager-speed travel 48,458,124 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.159 mas

Total Proper Motion

16.025 mas/yr

PM Right Ascension

-7.41 mas/yr

PM Declination

-14.21 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.647 · z = 0.700

Equatorial (J2000)

RA 294.98054° · Dec 44.42524°

Galactic ℓ, b

77.648° · 10.703°

Ecliptic λ, β

313.706° · 64.121°

HTM-20 index

-1118751019