Kepler-10 b

A confirmed exoplanet orbiting Kepler-10.

Compared with Earth

Size
About 1.5 times Earth's width.
Mass
About 3.2 times Earth's mass.
Temperature
About 1,915 °C (3,479 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Year
A year here lasts about 20 hours.

Planet

Radius
1.47 × Earth
Mass
3.24 × Earth
Density
5.54 g/cm³
Equilibrium temperature
2,188 K
Starlight received
Unknown
Orbital period
0.8375 days
Average distance from its star
0.01685 AU

Star

Host star
Kepler-10
Spectral class
G — sun-like
Surface temperature
5,708 K
Radius
1.065 × Sun
Mass
0.91 × Sun
Age
10.6 billion years

System

Distance from Earth
605 light-years (185.5 parsecs)
Stars in system
1
Known planets
3

Discovery

Year
2011
Method
Transit
Facility
Kepler

Data from the NASA Exoplanet Archive, synced October 14, 2026.