Exoplanet

K2-111 b

Orbiting K2-111

Overview

K2-111 b is an exoplanet orbiting the star K2-111, discovered in 2017 using the Transit method. It is a Super-Earth world.

Key Measurements

Radius

1.84

Earth radii

015 R⊕

Mass

5.35

Earth masses

0500 M⊕

Orbital Period

5.4

days

0.1d10,000d

Distance

200.4

parsecs

Nearby10,000 pc

Equilibrium Temp

1293

K

150 K3,500 K

Radius (Earth radii)

1.84

Mass (Earth masses)

5.35

Measured

Equilibrium Temperature

1293 K

Parameter source: Palethorpe et al. 2026

Orbital Period

5.352+0.000−0.000days

Semi-Major Axis

0.0565+0.0004−0.0004au

Planet Mass (Earth masses)

5.35+0.68−0.69

Planet Mass (Jupiter masses)

0.0168+0.0021−0.0022

Eccentricity

0.1340+0.0930−0.0710

Radial Velocity Semi-Amplitude

2.23+0.28−0.28m/s

Distance from Earth

200.4 pc (~654 ly)

Spectral Type

G2

Temperature

5775 K

Mass (Solar)

0.84 M☉

Radius (Solar)

1.25 R☉

Luminosity

Unknown

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

59.8903°, 21.2985°

Discovery Method

Transit

Discovery Year

2017

Data Sources
NASA Exoplanet Archive

Source ID: K2-111 b

System Context

K2-111 b orbits K2-111 and was reported in 2017 and was detected with the Transit method.

Published measurements list a radius of 1.84 Earth radii, a mass of 5.35 Earth masses, an orbital period of 5.35 days, and an equilibrium temperature near 1,293 K.

Catalog data places the system at about 200.4 parsecs from Earth, a host star classified as G2, and 2 known planets in the system.

Host star

Explore the stellar record for this system to compare temperature, spectral type, and known planets.

Open K2-111

More planets in this system

K2-111 c