Key parameters at a glance

A radius of 1.27 Earth radii
A mass of 2.16 Earth masses
Surface gravity around 1.33 g
An orbital period of 6.381 days
Distance from Earth 769.29 light-years
Earth Similarity Index 0.937
Travel time at Voyager 1 speed 13,566,506 years

K2-169 b Planet Profile

Physical Specs

Radius

1.27 R⊕

Radius (Jupiter)

0.114 R♃

Mass

2.16 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.75 g/cm³

Surface Gravity

1.33 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.937

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

#1131of 1176

top 96.1%

This planet

1.27R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1741 b 1.27 R⊕ K2-165 b 1.27 R⊕ LHS 1140 c 1.27 R⊕

Metric	Earth	K2-169 b	Jupiter
Radius (R⊕)	1.00	1.27	11.21
Mass (M⊕)	1.00	2.16	317.83
Density (g/cm³)	5.51	5.75	1.33
Surface Gravity (g)	1.00	1.33	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 12770870

Gaia DR2

Gaia DR2 2599322178998513664

Gaia DR3

Gaia DR3 2599322178998513664

System

K2-169

Percentile among Super-Earth cohort

Radius 1.273 R⊕ · percentile 4 / cohort 1176

Mass 2.160 M⊕ · percentile 5 / cohort 1176

Orbital period 6.38 d · percentile 49 / cohort 1164

Distance 235.87 pc · percentile 26 / cohort 1171

ESI 0.937 · percentile 99 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

6.381 days

Semi-major axis

— AU

Eccentricity

—

Inclination

87.84 °

Year Length

A year here lasts approximately 6.38 Earth days (1.7% of a terrestrial year).

Transit Fingerprint

Depth

0.016 %

Duration

3.096 h

Impact parameter b

0.100

Rp / R★

0.012701

Transit midpoint (BJD)

2,456,982.0097

Photometric dip

Transit produces a flux drop of 160 ppm lasting ≈ 3.10 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012701

Semi-major axis / stellar radius

13.592

Impact parameter (b)

0.100

Transit mid-time (BJD)

2,456,982.0097

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.937

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 K2-148 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 K2-219 c · Super-Earth

Host System: K2-169

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,548 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.919 R☉

Stellar Mass

0.986 M☉

Metallicity [Fe/H]

0.26

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

1.498 g/cm³

Systemic radial velocity

-8.15 km/s

Metallicity ratio

[Fe/H]

Distance

235.87 parsec

Light-years 769.29 ly

V-band magnitude

12.23 mag

Voyager-speed travel 13,566,506 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

4.213 mas

Total Proper Motion

12.303 mas/yr

PM Right Ascension

-3.12 mas/yr

PM Declination

11.90 mas/yr

Galactic Cartesian (pc)

x = 0.891 · y = -0.377 · z = -0.252

Equatorial (J2000)

RA 337.04425° · Dec -14.59934°

Galactic ℓ, b

46.197° · -54.423°

Ecliptic λ, β

333.379° · -4.653°

HTM-20 index

745816099