Exoplanet

K2-398 c

Orbiting K2-398

Overview

K2-398 c is an exoplanet orbiting the star K2-398, discovered in 2022 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

5.10

Earth radii

015 R⊕

Mass (est.)

24.28

Earth masses

0500 M⊕

Orbital Period

18.8

days

0.1d10,000d

Distance

607.0

parsecs

Nearby10,000 pc

Radius (Earth radii)

5.10

Mass (Earth masses)

24.28

Estimated

Equilibrium Temperature

Unknown

Parameter source: Christiansen et al. 2022

Orbital Period

18.788+0.001−0.001days

Distance from Earth

607.0 pc (~1980 ly)

Spectral Type

Unknown

Temperature

5946 K

Mass (Solar)

0.94 M☉

Radius (Solar)

1.24 R☉

Luminosity

Unknown

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

161.7350°, 1.9367°

Discovery Method

Transit

Discovery Year

2022

Data Sources
NASA Exoplanet Archive

Source ID: K2-398 c

System Context

K2-398 c orbits K2-398 and was reported in 2022 and was detected with the Transit method.

Published measurements list a radius of 5.1 Earth radii, a mass of 24.28 Earth masses (estimated), and an orbital period of 18.79 days.

Catalog data places the system at about 607 parsecs from Earth 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 K2-398

More planets in this system

K2-398 b
K2-398 c