GJ 740 b

A confirmed exoplanet orbiting GJ 740.

Compared with Earth

Mass
About 3 times Earth's mass.
Temperature
About 556 °C (1,033 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Starlight
About 79 times the starlight Earth gets from the Sun.
Year
A year here lasts about 2.4 Earth days.

Planet

Radius
Unknown
Mass
2.96 × Earth
Density
Unknown
Equilibrium temperature
829 K
Starlight received
79 × Earth
Orbital period
2.378 days
Average distance from its star
0.029 AU

Star

Host star
GJ 740
Spectral class
K — orange dwarf
Surface temperature
3,913 K
Radius
0.56 × Sun
Mass
0.58 × Sun
Age
Unknown

System

Distance from Earth
36.21 light-years (11.1 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2021
Method
Radial Velocity
Facility
Multiple Observatories

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