Key parameters at a glance

A radius of 1.52 Earth radii
A mass of 2.92 Earth masses
Surface gravity around 1.26 g
An orbital period of 4.163 days
Semi-major axis 0.0490 AU
Equilibrium temperature 939 K (666 °C)
Distance from Earth 723.26 light-years
Earth Similarity Index 0.318
Travel time at Voyager 1 speed 12,754,702 years

K2-192 b Planet Profile

Physical Specs

Radius

1.52 R⊕

Radius (Jupiter)

0.136 R♃

Mass

2.92 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.57 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.318

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#707of 1176

top 60.0%

This planet

1.52R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-65 d 1.52 R⊕ Kepler-348 b 1.52 R⊕ Kepler-306 b 1.52 R⊕

Metric	Earth	K2-192 b	Jupiter
Radius (R⊕)	1.00	1.52	11.21
Mass (M⊕)	1.00	2.92	317.83
Density (g/cm³)	5.51	4.57	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 187273811

Gaia DR2

Gaia DR2 3613467311677116160

Gaia DR3

Gaia DR3 3613467311677116160

System

K2-192

Percentile among Super-Earth cohort

Radius 1.520 R⊕ · percentile 39 / cohort 1176

Mass 2.920 M⊕ · percentile 36 / cohort 1176

Orbital period 4.16 d · percentile 33 / cohort 1164

Distance 221.75 pc · percentile 26 / cohort 1171

ESI 0.318 · percentile 41 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.163 days

Semi-major axis

0.0490 AU

Eccentricity

—

Inclination

88.39 °

Year Length

A year here lasts approximately 4.16 Earth days (1.1% of a terrestrial year) at a mean orbital distance of 0.0490 AU.

Transit Fingerprint

Depth

0.032 %

Duration

1.618 h

Impact parameter b

0.430

Rp / R★

0.017100

Transit midpoint (BJD)

2,457,220.4440

Photometric dip

Transit produces a flux drop of 318 ppm lasting ≈ 1.62 h.

Extended Orbital Architecture

Planet / star radius ratio

0.017100

Semi-major axis / stellar radius

17.640

Impact parameter (b)

0.430

Transit mid-time (BJD)

2,457,220.4440

Angular separation (arcsec)

0.22100

Eq. Temperature

939K

(666 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.318

0 = alien, 1 = Earth-identical

Insufficient insolation data — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Mayo et al. 2018

Instrument

Kepler CCD Array

Publication

2018-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2018 at K2 (12 shown).

K2-190 c · Rocky Terrestrial K2-183 b · Rocky Terrestrial K2-209 b · Rocky Terrestrial K2-210 b · Rocky Terrestrial K2-165 b · Super-Earth K2-169 b · Super-Earth K2-148 b · Super-Earth K2-219 b · Super-Earth K2-190 b · Super-Earth K2-200 b · Super-Earth K2-201 b · Super-Earth K2-170 b · Super-Earth

Host System: K2-192

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,222 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.810 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.570 dex

Stellar density

5.975 g/cm³

Systemic radial velocity

0.95 km/s

Metallicity ratio

[Fe/H]

Distance

221.75 parsec

Light-years 723.26 ly

V-band magnitude

12.66 mag

Voyager-speed travel 12,754,702 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

4.481 mas

Total Proper Motion

24.765 mas/yr

PM Right Ascension

10.38 mas/yr

PM Declination

-22.48 mas/yr

Galactic Cartesian (pc)

x = -0.876 · y = -0.438 · z = -0.200

Equatorial (J2000)

RA 206.58231° · Dec -11.55635°

Galactic ℓ, b

323.718° · 49.087°

Ecliptic λ, β

208.809° · -0.539°

HTM-20 index

476960710