Kepler-1257 b
A confirmed exoplanet orbiting Kepler-1257.
Compared with Earth
- Size
- About 1.5 times Earth's width.
- Year
- A year here lasts about 2.7 Earth days.
Planet
- Radius
- 1.52 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 2.668 days
- Average distance from its star
- Unknown
Star
- Host star
- Kepler-1257
- Spectral class
- G — sun-like
- Surface temperature
- 5,502 K
- Radius
- 0.87 × Sun
- Mass
- 0.9 × Sun
- Age
- 4.37 billion years
System
- Distance from Earth
- 3,607 light-years (1,106 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.