Kepler-1638 b

A confirmed exoplanet orbiting Kepler-1638.

Compared with Earth

Size
About 1.9 times Earth's width.
Year
A year here lasts about 259 Earth days.

Planet

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

Star

Host star
Kepler-1638
Spectral class
G — sun-like
Surface temperature
5,710 K
Radius
0.95 × Sun
Mass
0.97 × Sun
Age
4.37 billion years

System

Distance from Earth
4,976 light-years (1,526 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.