Key parameters at a glance

A radius of 2.04 Earth radii
A mass of 4.81 Earth masses
Surface gravity around 1.16 g
An orbital period of 9.526 days
Distance from Earth 806.47 light-years
Earth Similarity Index 0.778
Travel time at Voyager 1 speed 14,222,149 years

K2-175 b Planet Profile

Physical Specs

Radius

2.04 R⊕

Radius (Jupiter)

0.182 R♃

Mass

4.81 M⊕

Mass (Jupiter)

0.015 M♃

Density

3.12 g/cm³

Surface Gravity

1.16 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.778

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

#1914of 1978

top 96.7%

This planet

2.04R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-324 e 2.04 R⊕ Kepler-230 c 2.04 R⊕ Kepler-48 d 2.04 R⊕

Metric	Earth	K2-175 b	Jupiter
Radius (R⊕)	1.00	2.04	11.21
Mass (M⊕)	1.00	4.81	317.83
Density (g/cm³)	5.51	3.12	1.33
Surface Gravity (g)	1.00	1.16	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 435279748

Gaia DR2

Gaia DR2 55077599749605504

Gaia DR3

Gaia DR3 55077599749605504

System

K2-175

Percentile among Sub-Neptune cohort

Radius 2.038 R⊕ · percentile 3 / cohort 1978

Mass 4.810 M⊕ · percentile 5 / cohort 1978

Orbital period 9.53 d · percentile 32 / cohort 1946

Distance 247.27 pc · percentile 32 / cohort 1975

ESI 0.778 · percentile 99 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.526 days

Semi-major axis

— AU

Eccentricity

—

Inclination

87.49 °

Year Length

A year here lasts approximately 9.53 Earth days (2.6% of a terrestrial year).

Transit Fingerprint

Rp / R★

0.013158

Transit midpoint (BJD)

2,457,073.2768

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.778

0 = alien, 1 = Earth-identical

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: K2-175

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,909 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.420 R☉

Stellar Mass

1.095 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.110 dex

Stellar density

0.326 g/cm³

Systemic radial velocity

-32.58 km/s

Metallicity ratio

[Fe/H]

Distance

247.27 parsec

Light-years 806.47 ly

V-band magnitude

10.84 mag

Voyager-speed travel 14,222,149 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

4.016 mas

Total Proper Motion

22.191 mas/yr

PM Right Ascension

3.33 mas/yr

PM Declination

-21.94 mas/yr

Galactic Cartesian (pc)

x = 0.580 · y = 0.756 · z = 0.302

Equatorial (J2000)

RA 52.50355° · Dec 17.58411°

Galactic ℓ, b

168.151° · -31.033°

Ecliptic λ, β

54.515° · -1.356°

HTM-20 index

-1436143317