Key parameters at a glance

A radius of 1.24 Earth radii
A mass of 2.08 Earth masses
Surface gravity around 1.34 g
An orbital period of 2.747 days
Semi-major axis 0.0301 AU
Distance from Earth 409.42 light-years
Earth Similarity Index 0.935
Travel time at Voyager 1 speed 7,220,128 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around K2-83

K2-83 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
K2-83 b this	Rocky Terrestrial	1.24	2.08	2.747	—	2016
K2-83 c	Super-Earth	1.48	2.80	9.998	—	2016

K2-83 b Planet Profile

Physical Specs

Radius

1.24 R⊕

Radius (Jupiter)

0.111 R♃

Mass

2.08 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.94 g/cm³

Surface Gravity

1.34 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.935

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1of 570

top 0.0%

This planet

1.24R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

TOI-2096 b 1.24 R⊕ LHS 1478 b 1.24 R⊕ Kepler-354 d 1.24 R⊕

Metric	Earth	K2-83 b	Jupiter
Radius (R⊕)	1.00	1.24	11.21
Mass (M⊕)	1.00	2.08	317.83
Density (g/cm³)	5.51	5.94	1.33
Surface Gravity (g)	1.00	1.34	2.53
Insolation (S⊕)	1.00	41.50	0.037

Star Catalogue Identifiers

TIC

TIC 242988068

Gaia DR2

Gaia DR2 40139531695379328

Gaia DR3

Gaia DR3 40139531695379328

System

K2-83

Percentile among Rocky Terrestrial cohort

Radius 1.244 R⊕ · percentile 100 / cohort 570

Mass 2.080 M⊕ · percentile 91 / cohort 570

Orbital period 2.75 d · percentile 31 / cohort 567

Distance 125.53 pc · percentile 25 / cohort 566

ESI 0.935 · percentile 92 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.747 days

Semi-major axis

0.0301 AU

Eccentricity

0.070

Inclination

88.72 °

Year Length

A year here lasts approximately 2.75 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0301 AU.

Transit Fingerprint

Depth

0.092 %

Duration

1.664 h

Rp / R★

0.026800

Transit midpoint (BJD)

2,457,067.0633

Photometric dip

Transit produces a flux drop of 920 ppm lasting ≈ 1.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.026800

Semi-major axis / stellar radius

12.590

Transit mid-time (BJD)

2,457,067.0633

Long. of periastron (ω)

-5.43°

Angular separation (arcsec)

0.24000

Eq. Temperature

—

Insolation (S⊕)

41.50

Earth = 1.00

Earth Similarity (ESI)

0.935

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water). Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Crossfield et al. 2016

Instrument

Kepler CCD Array

Publication

2016-09

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at K2 (12 shown).

K2-72 d · Rocky Terrestrial K2-72 b · Rocky Terrestrial K2-91 b · Rocky Terrestrial K2-72 c · Rocky Terrestrial K2-102 b · Super-Earth K2-90 c · Super-Earth K2-72 e · Super-Earth K2-88 b · Rocky Terrestrial K2-80 c · Super-Earth K2-83 c · Super-Earth K2-65 b · Super-Earth K2-68 b · Super-Earth

Host System: K2-83

Spectral Class

K-type orange

Effective Temperature

3,910 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.424 R☉

Stellar Mass

0.484 M☉

Metallicity [Fe/H]

—

Distance

125.53 parsec

Light-years 409.42 ly

V-band magnitude

14.52 mag

Voyager-speed travel 7,220,128 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

7.938 mas

Total Proper Motion

44.583 mas/yr

PM Right Ascension

-40.43 mas/yr

PM Declination

-18.79 mas/yr

Galactic Cartesian (pc)

x = 0.483 · y = 0.833 · z = 0.268

Equatorial (J2000)

RA 59.90138° · Dec 15.55880°

Galactic ℓ, b

175.582° · -27.514°

Ecliptic λ, β

60.991° · -4.901°

HTM-20 index

-559831002