Exoplanet
K2-257 b
Orbiting K2-257
Overview
K2-257 b is an exoplanet orbiting the star K2-257, discovered in 2018 using the Transit method. It is a Earth-sized world.
Key Measurements
Radius
0.83
Earth radii
015 R⊕
Mass (est.)
0.50
Earth masses
0500 M⊕
Orbital Period
1.6
days
0.1d10,000d
Distance
64.0
parsecs
Nearby10,000 pc
Equilibrium Temp
789
K
150 K3,500 K
Radius (Earth radii)
0.83
Mass (Earth masses)
0.50
Estimated
Equilibrium Temperature
789 K
Orbital Period
1.61 days
Distance from Earth
64.0 pc (~209 ly)
Spectral Type
Unknown
Temperature
3725 K
Mass (Solar)
0.52 M☉
Radius (Solar)
0.50 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
188.2783°, -1.9533°
Discovery Method
Transit
Discovery Year
2018
Data Sources
Source ID: K2-257 b