Key parameters at a glance

A radius of 2.35 Earth radii
A mass of 6.14 Earth masses
Surface gravity around 1.11 g
An orbital period of 14.026 days
Semi-major axis 0.1160 AU
Equilibrium temperature 822 K (549 °C)
Distance from Earth 3,012.22 light-years
Earth Similarity Index 0.315
Travel time at Voyager 1 speed 53,120,444 years

Kepler-1842 b Planet Profile

Physical Specs

Radius

2.35 R⊕

Radius (Jupiter)

0.210 R♃

Mass

6.14 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.59 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.315

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

#1413of 1978

top 71.4%

This planet

2.35R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-10 c 2.36 R⊕ Kepler-1806 b 2.36 R⊕ Kepler-416 c 2.35 R⊕

Metric	Earth	Kepler-1842 b	Jupiter
Radius (R⊕)	1.00	2.35	11.21
Mass (M⊕)	1.00	6.14	317.83
Density (g/cm³)	5.51	2.59	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	108.07	0.037

Star Catalogue Identifiers

TIC

TIC 158216580

Gaia DR2

Gaia DR2 2105506497375025024

Gaia DR3

Gaia DR3 2105506497375025024

System

Kepler-1842

Percentile among Sub-Neptune cohort

Radius 2.354 R⊕ · percentile 29 / cohort 1978

Mass 6.140 M⊕ · percentile 28 / cohort 1978

Orbital period 14.03 d · percentile 48 / cohort 1946

Distance 923.55 pc · percentile 74 / cohort 1975

ESI 0.315 · percentile 32 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

14.026 days

Semi-major axis

0.1160 AU

Eccentricity

0.000

Inclination

88.86 °

Year Length

A year here lasts approximately 14.03 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1160 AU.

Transit Fingerprint

Depth

0.040 %

Duration

1.281 h

Impact parameter b

0.212

Rp / R★

0.018975

Transit midpoint (BJD)

2,454,968.1754

Photometric dip

Transit produces a flux drop of 404 ppm lasting ≈ 1.28 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018975

Semi-major axis / stellar radius

87.200

Impact parameter (b)

0.212

Transit mid-time (BJD)

2,454,968.1754

Angular separation (arcsec)

0.12600

Eq. Temperature

822K

(549 °C)

Insolation (S⊕)

108.07

Earth = 1.00

Earth Similarity (ESI)

0.315

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-1842

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,970 K — hotter than the Sun (5,778 K)

Estimated Age

7.00 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.131 R☉

Stellar Mass

1.057 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.355 dex

Stellar density

8.127 g/cm³

Metallicity ratio

[Fe/H]

Distance

923.55 parsec

Light-years 3,012.22 ly

V-band magnitude

14.75 mag

Voyager-speed travel 53,120,444 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.054 mas

Total Proper Motion

8.401 mas/yr

PM Right Ascension

-5.92 mas/yr

PM Declination

-5.96 mas/yr

Galactic Cartesian (pc)

x = 0.207 · y = -0.709 · z = 0.674

Equatorial (J2000)

RA 286.25160° · Dec 42.37844°

Galactic ℓ, b

72.979° · 15.572°

Ecliptic λ, β

298.383° · 64.225°

HTM-20 index

1250788395