The Kepler-1257 system contains 1 exoplanet. It is located 3607.12 light years away from the solar system.
|Mass||0.9 solar masses|
|Radius||0.87 solar radiae|
|Stellar Metallicity||-0.09 decimal exponent|
|Age||4.37 billion years|
At 2.926 Earth masses, Kepler-1257 b is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
|Mass||2.920 Earth masses|
|Density||4.570 grams per cubic centimeter|
|Radius||1.520 Earth radiae|
|Semi-major Axis||0.0376 AU|
|Orbital Period||2.668 days|
|Discovery Telescope||0.95 m Kepler Telescope|
|Discovery Instrument||Kepler CCD Array|
|Reference||Morton et al. 2016|