Key parameters at a glance

A radius of 1.57 Earth radii
A mass of 3.09 Earth masses
Surface gravity around 1.25 g
An orbital period of 4.145 days
Semi-major axis 0.0531 AU
Equilibrium temperature 1,429 K (1156 °C)
Distance from Earth 1,176.64 light-years
Earth Similarity Index 0.197
Travel time at Voyager 1 speed 20,750,052 years

K2-269 b Planet Profile

Physical Specs

Radius

1.57 R⊕

Radius (Jupiter)

0.140 R♃

Mass

3.09 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.39 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.197

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

#618of 1176

top 52.5%

This planet

1.57R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-236 b 1.57 R⊕ Kepler-356 b 1.57 R⊕ Kepler-249 d 1.57 R⊕

Metric	Earth	K2-269 b	Jupiter
Radius (R⊕)	1.00	1.57	11.21
Mass (M⊕)	1.00	3.09	317.83
Density (g/cm³)	5.51	4.39	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 21339280

Gaia DR2

Gaia DR2 603087251731604480

Gaia DR3

Gaia DR3 603087247436468608

System

K2-269

Percentile among Super-Earth cohort

Radius 1.570 R⊕ · percentile 47 / cohort 1176

Mass 3.090 M⊕ · percentile 42 / cohort 1176

Orbital period 4.14 d · percentile 32 / cohort 1164

Distance 360.76 pc · percentile 37 / cohort 1171

ESI 0.197 · percentile 12 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.145 days

Semi-major axis

0.0531 AU

Eccentricity

—

Inclination

86.72 °

Year Length

A year here lasts approximately 4.14 Earth days (1.1% of a terrestrial year) at a mean orbital distance of 0.0531 AU.

Transit Fingerprint

Depth

0.008 %

Duration

2.710 h

Impact parameter b

0.420

Rp / R★

0.010000

Transit midpoint (BJD)

2,457,141.5986

Photometric dip

Transit produces a flux drop of 78 ppm lasting ≈ 2.71 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010000

Semi-major axis / stellar radius

10.070

Impact parameter (b)

0.420

Transit mid-time (BJD)

2,457,141.5986

Angular separation (arcsec)

0.14700

Eq. Temperature

1,429K

(1156 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.197

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Livingston et al. 2018

Instrument

Kepler CCD Array

Publication

2018-12

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: K2-269

Spectral Class

F-type yellow-white

Effective Temperature

6,209 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.450 R☉

Stellar Mass

1.160 M☉

Metallicity [Fe/H]

-0.08

Extended Stellar Properties

Surface gravity (log g)

4.180 dex

Stellar density

1.130 g/cm³

Systemic radial velocity

-3.20 km/s

Metallicity ratio

[Fe/H]

Distance

360.76 parsec

Light-years 1,176.64 ly

V-band magnitude

11.78 mag

Voyager-speed travel 20,750,052 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

2.748 mas

Total Proper Motion

23.610 mas/yr

PM Right Ascension

-23.38 mas/yr

PM Declination

-3.29 mas/yr

Galactic Cartesian (pc)

x = -0.628 · y = 0.745 · z = 0.225

Equatorial (J2000)

RA 130.15514° · Dec 13.01468°

Galactic ℓ, b

213.151° · 30.022°

Ecliptic λ, β

129.108° · -5.140°

HTM-20 index

-499520918