Kepler-657 b

A confirmed exoplanet orbiting Kepler-657.

Compared with Earth

Size
About 3.5 times Earth's width.
Year
A year here lasts about 25 Earth days.

Planet

Radius
3.52 × Earth
Mass
Unknown
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
24.54 days
Average distance from its star
Unknown

Star

Host star
Kepler-657
Spectral class
G — sun-like
Surface temperature
5,808 K
Radius
1.01 × Sun
Mass
1.01 × Sun
Age
4.17 billion years

System

Distance from Earth
5,518 light-years (1,692 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.