GJ 9773 b

A confirmed exoplanet orbiting GJ 9773.

Compared with Earth

Mass
About 173 times Earth's mass.
Year
A year here lasts about 8.1 Earth years.

Planet

Radius
Unknown
Mass
172.6 × Earth
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
2,965 days
Average distance from its star
2.921 AU

Star

Host star
GJ 9773
Spectral class
M — red dwarf
Surface temperature
3,528 K
Radius
0.362 × Sun
Mass
0.358 × Sun
Age
Unknown

System

Distance from Earth
51.93 light-years (15.92 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2025
Method
Radial Velocity
Facility
Calar Alto Observatory

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