Kepler-638 b

A confirmed exoplanet orbiting Kepler-638.

Compared with Earth

Size
About 1.8 times Earth's width.
Year
A year here lasts about 6.1 Earth days.

Planet

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

Star

Host star
Kepler-638
Spectral class
G — sun-like
Surface temperature
5,382 K
Radius
0.93 × Sun
Mass
0.88 × Sun
Age
11.75 billion years

System

Distance from Earth
3,233 light-years (991.2 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.