K2-257 b is a terrestrial exoplanet that orbits a K-type star. Its mass is 0.498 Earths, it takes 1.6 days to complete one orbit of its star, and is 0.0216 AU from its star. Its discovery was announced in 2018.

PLANET TYPE
Terrestrial
DISCOVERY DATE
2018
MASS
0.498 Earths
PLANET RADIUS
0.83 x Earth
ORBITAL RADIUS
0.0216 AU
ORBITAL PERIOD
1.6 days
ECCENTRICITY
0.0
DETECTION METHOD