K2-136 b

A confirmed exoplanet orbiting K2-136.

Compared with Earth

Size
Almost exactly Earth's width.
Mass
About 4.3 times Earth's mass.
Temperature
About 337 °C (638 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Starlight
About 34 times the starlight Earth gets from the Sun.
Year
A year here lasts about 8 Earth days.

Planet

Radius
1.014 × Earth
Mass
4.3 × Earth
Density
24 g/cm³
Equilibrium temperature
610 K
Starlight received
33.5 × Earth
Orbital period
7.975 days
Average distance from its star
0.0707 AU

Star

Host star
K2-136
Spectral class
K — orange dwarf
Surface temperature
4,500 K
Radius
0.677 × Sun
Mass
0.742 × Sun
Age
0.65 billion years

System

Distance from Earth
193.2 light-years (59.25 parsecs)
Stars in system
2
Known planets
3

Discovery

Year
2017
Method
Transit
Facility
K2

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