Exoplanet

K2-218 b

Orbiting K2-218

Overview

K2-218 b is an exoplanet orbiting the star K2-218, discovered in 2018 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.57

Earth radii

015 R⊕

Mass (est.)

7.59

Earth masses

0500 M⊕

Orbital Period

8.7

days

0.1d10,000d

Distance

394.1

parsecs

Nearby10,000 pc

Radius (Earth radii)

2.57

Mass (Earth masses)

7.59

Estimated

Equilibrium Temperature

Unknown

Parameter source: Mayo et al. 2018

Orbital Period

8.680+0.000−0.000days

Distance from Earth

394.1 pc (~1285 ly)

Spectral Type

Unknown

Temperature

5757 K

Mass (Solar)

1.05 M☉

Radius (Solar)

1.01 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

12.8096°, 6.8464°

Discovery Method

Transit

Discovery Year

2018

Data Sources
NASA Exoplanet Archive

Source ID: K2-218 b

System Context

K2-218 b orbits K2-218 and was reported in 2018 and was detected with the Transit method.

Published measurements list a radius of 2.57 Earth radii, a mass of 7.59 Earth masses (estimated), and an orbital period of 8.68 days.

Catalog data places the system at about 394.1 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 K2-218