Key parameters at a glance

A radius of 2.25 Earth radii
A mass of 5.69 Earth masses
Surface gravity around 1.12 g
An orbital period of 15.170 days
Semi-major axis 0.1280 AU
Equilibrium temperature 905 K (632 °C)
Distance from Earth 2,549.27 light-years
Earth Similarity Index 0.289
Travel time at Voyager 1 speed 44,956,395 years

3 siblings around Kepler-342

Kepler-342 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-342 e	Rocky Terrestrial	0.88	0.62	1.644	1,897	2016
Kepler-342 b this	Sub-Neptune	2.25	5.69	15.170	905	2014
Kepler-342 c	Super-Earth	1.96	4.50	26.234	754	2014
Kepler-342 d	Sub-Neptune	2.49	6.76	39.459	658	2014

Kepler-342 b Planet Profile

Physical Specs

Radius

2.25 R⊕

Radius (Jupiter)

0.201 R♃

Mass

5.69 M⊕

Mass (Jupiter)

0.018 M♃

Density

2.74 g/cm³

Surface Gravity

1.12 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.289

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1589of 1978

top 80.3%

This planet

2.25R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-300 c 2.25 R⊕ GJ 667 C b 2.25 R⊕ Kepler-272 d 2.25 R⊕

Metric	Earth	Kepler-342 b	Jupiter
Radius (R⊕)	1.00	2.25	11.21
Mass (M⊕)	1.00	5.69	317.83
Density (g/cm³)	5.51	2.74	1.33
Surface Gravity (g)	1.00	1.12	2.53
Insolation (S⊕)	1.00	160.26	0.037

Star Catalogue Identifiers

TIC

TIC 63293562

Gaia DR2

Gaia DR2 2128298617506651904

Gaia DR3

Gaia DR3 2128298617506651904

System

Kepler-342

Percentile among Sub-Neptune cohort

Radius 2.250 R⊕ · percentile 19 / cohort 1978

Mass 5.690 M⊕ · percentile 19 / cohort 1978

Orbital period 15.17 d · percentile 51 / cohort 1946

Distance 781.61 pc · percentile 64 / cohort 1975

ESI 0.289 · percentile 25 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

15.170 days

Semi-major axis

0.1280 AU

Eccentricity

0.000

Inclination

85.52 °

Year Length

A year here lasts approximately 15.17 Earth days (4.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1280 AU.

Transit Fingerprint

Depth

0.022 %

Duration

4.016 h

Impact parameter b

0.010

Rp / R★

0.014124

Transit midpoint (BJD)

2,454,965.6628

Photometric dip

Transit produces a flux drop of 225 ppm lasting ≈ 4.02 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014124

Semi-major axis / stellar radius

11.850

Impact parameter (b)

0.010

Transit mid-time (BJD)

2,454,965.6628

Angular separation (arcsec)

0.16400

Eq. Temperature

905K

(632 °C)

Insolation (S⊕)

160.26

Earth = 1.00

Earth Similarity (ESI)

0.289

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

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-342

Spectral Class

F-type yellow-white

Effective Temperature

6,175 K — hotter than the Sun (5,778 K)

Estimated Age

2.82 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.472 R☉

Stellar Mass

1.213 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.187 dex

Stellar density

0.013 g/cm³

Metallicity ratio

[M/H]

Distance

781.61 parsec

Light-years 2,549.27 ly

V-band magnitude

13.20 mag

Voyager-speed travel 44,956,395 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.251 mas

Total Proper Motion

8.649 mas/yr

PM Right Ascension

-5.24 mas/yr

PM Declination

-6.88 mas/yr

Galactic Cartesian (pc)

x = 0.264 · y = -0.632 · z = 0.728

Equatorial (J2000)

RA 292.67805° · Dec 46.72668°

Galactic ℓ, b

79.008° · 13.177°

Ecliptic λ, β

312.274° · 66.867°

HTM-20 index

-943510250