Exoplanet

K2-338 b

Orbiting K2-338

Overview

K2-338 b is an exoplanet orbiting the star K2-338, discovered in 2021 using the Transit method. It is a Earth-sized world.

Key Measurements

Radius

1.03

Earth radii

015 R⊕

Mass (est.)

1.08

Earth masses

0500 M⊕

Orbital Period

3.9

days

0.1d10,000d

Distance

157.0

parsecs

Nearby10,000 pc

Equilibrium Temp

783

K

150 K3,500 K

Radius (Earth radii)

1.03

Mass (Earth masses)

1.08

Estimated

Equilibrium Temperature

783 K

Orbital Period

3.85 days

Distance from Earth

157.0 pc (~512 ly)

Spectral Type

Unknown

Temperature

4558 K

Mass (Solar)

0.66 M☉

Radius (Solar)

0.63 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

124.3609°, 17.0242°

Discovery Method

Transit

Discovery Year

2021

Data Sources
NASA Exoplanet Archive

Source ID: K2-338 b

System Context

K2-338 b orbits K2-338 and was reported in 2021 and was detected with the Transit method.

Published measurements list a radius of 1.03 Earth radii, a mass of 1.08 Earth masses (estimated), an orbital period of 3.85 days, and an equilibrium temperature near 783 K.

Catalog data places the system at about 157 parsecs from Earth and 1 known planet in the system.

Host star

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

Open K2-338