GJ 9689 b
A confirmed exoplanet orbiting GJ 9689.
Compared with Earth
- Mass
- About 9.7 times Earth's mass.
- Temperature
- About 180 °C (356 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 18 Earth days.
Planet
- Radius
- Unknown
- Mass
- 9.65 × Earth
- Density
- Unknown
- Equilibrium temperature
- 453 K
- Starlight received
- Unknown
- Orbital period
- 18.27 days
- Average distance from its star
- 0.1139 AU
Star
- Host star
- GJ 9689
- Spectral class
- M — red dwarf
- Surface temperature
- 3,836 K
- Radius
- 0.57 × Sun
- Mass
- 0.59 × Sun
- Age
- 8.9 billion years
System
- Distance from Earth
- 99.87 light-years (30.62 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2020
- Method
- Radial Velocity
- Facility
- Roque de los Muchachos Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.