K2-222 b
Orbiting K2-222
K2-222 b is an exoplanet orbiting the star K2-222, discovered in 2018 using the Transit method. It is a Super-Earth world.
Radius
2.27
Earth radii
Mass
7.50
Earth masses
Orbital Period
15.4
days
Distance
101.3
parsecs
Equilibrium Temp
803
K
Radius (Earth radii)
2.27
Mass (Earth masses)
7.50
Measured
Equilibrium Temperature
803 K
Parameter source: Palethorpe et al. 2026
Orbital Period
15.389+0.000−0.000days
Semi-Major Axis
0.1186+0.0021−0.0021au
Planet Mass (Earth masses)
7.50+1.50−1.50
Planet Mass (Jupiter masses)
0.0236+0.0047−0.0047
Eccentricity
0.0210+0.0510−0.0170
Radial Velocity Semi-Amplitude
2.01+0.39−0.40m/s
Distance from Earth
101.3 pc (~330 ly)
Spectral Type
G0
Temperature
5942 K
Mass (Solar)
0.94 M☉
Radius (Solar)
1.07 R☉
Luminosity
0.13 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
16.4625°, 11.7537°
Discovery Method
Transit
Discovery Year
2018
Source ID: K2-222 b
K2-222 b orbits K2-222 and was reported in 2018 and was detected with the Transit method.
Published measurements list a radius of 2.28 Earth radii, a mass of 7.5 Earth masses, an orbital period of 15.39 days, and an equilibrium temperature near 803 K.
Catalog data places the system at about 101.3 parsecs from Earth, a host star classified as G0, 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 K2-222