Key parameters at a glance

A radius of 1.85 Earth radii
A mass of 4.08 Earth masses
Surface gravity around 1.19 g
An orbital period of 15.399 days
Distance from Earth 1,327.41 light-years
Earth Similarity Index 0.814
Travel time at Voyager 1 speed 23,408,803 years

K2-392 b Planet Profile

Physical Specs

Radius

1.85 R⊕

Radius (Jupiter)

0.165 R♃

Mass

4.08 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.54 g/cm³

Surface Gravity

1.19 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.814

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#189of 1176

top 16.0%

This planet

1.85R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-641 b 1.85 R⊕ Kepler-217 c 1.85 R⊕ Kepler-350 b 1.85 R⊕

Metric	Earth	K2-392 b	Jupiter
Radius (R⊕)	1.00	1.85	11.21
Mass (M⊕)	1.00	4.08	317.83
Density (g/cm³)	5.51	3.54	1.33
Surface Gravity (g)	1.00	1.19	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 8963531

Gaia DR2

Gaia DR2 2439238852271933568

Gaia DR3

Gaia DR3 2439238852271933568

System

K2-392

Percentile among Super-Earth cohort

Radius 1.850 R⊕ · percentile 83 / cohort 1176

Mass 4.080 M⊕ · percentile 76 / cohort 1176

Orbital period 15.40 d · percentile 79 / cohort 1164

Distance 406.99 pc · percentile 40 / cohort 1171

ESI 0.814 · percentile 90 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

15.399 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 15.40 Earth days (4.2% of a terrestrial year).

Transit Fingerprint

Duration

3.500 h

Impact parameter b

0.711

Rp / R★

0.016000

Transit midpoint (BJD)

2,457,739.6737

Extended Orbital Architecture

Planet / star radius ratio

0.016000

Semi-major axis / stellar radius

24.320

Impact parameter (b)

0.711

Transit mid-time (BJD)

2,457,739.6737

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.814

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Christiansen et al. 2022

Instrument

Kepler CCD Array

Publication

2022-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2022 at K2 (12 shown).

K2-411 b · Rocky Terrestrial K2-381 b · Rocky Terrestrial K2-384 b · Rocky Terrestrial K2-400 b · Rocky Terrestrial K2-384 c · Rocky Terrestrial K2-369 b · Super-Earth K2-407 b · Super-Earth K2-414 b · Rocky Terrestrial K2-368 b · Super-Earth K2-413 c · Rocky Terrestrial K2-384 e · Super-Earth K2-407 c · Super-Earth

Host System: K2-392

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,726 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.058 R☉

Stellar Mass

0.841 M☉

Metallicity [Fe/H]

-0.24

Extended Stellar Properties

Surface gravity (log g)

4.314 dex

Stellar density

1.267 g/cm³

Metallicity ratio

[Fe/H]

Distance

406.99 parsec

Light-years 1,327.41 ly

V-band magnitude

12.92 mag

Voyager-speed travel 23,408,803 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

2.430 mas

Total Proper Motion

28.900 mas/yr

PM Right Ascension

28.48 mas/yr

PM Declination

-4.92 mas/yr

Galactic Cartesian (pc)

x = 0.987 · y = -0.092 · z = -0.130

Equatorial (J2000)

RA 354.64991° · Dec -7.47888°

Galactic ℓ, b

78.280° · -63.841°

Ecliptic λ, β

352.118° · -4.741°

HTM-20 index

1514344958