GJ 1289 b
A confirmed exoplanet orbiting GJ 1289.
Compared with Earth
- Mass
- About 6.3 times Earth's mass.
- Temperature
- About -123 °C (-190 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 112 Earth days.
Planet
- Radius
- Unknown
- Mass
- 6.27 × Earth
- Density
- Unknown
- Equilibrium temperature
- 150 K
- Starlight received
- Unknown
- Orbital period
- 111.7 days
- Average distance from its star
- 0.27 AU
Star
- Host star
- GJ 1289
- Spectral class
- M — red dwarf
- Surface temperature
- 3,296 K
- Radius
- Unknown
- Mass
- 0.21 × Sun
- Age
- Unknown
System
- Distance from Earth
- 27.24 light-years (8.351 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2024
- Method
- Radial Velocity
- Facility
- Multiple Observatories
Data from the NASA Exoplanet Archive, synced October 14, 2026.