GJ 3988 b
A confirmed exoplanet orbiting GJ 3988.
Compared with Earth
- Mass
- About 3.7 times Earth's mass.
- Temperature
- About 75 °C (167 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 2.5 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 6.9 Earth days.
Planet
- Radius
- Unknown
- Mass
- 3.69 × Earth
- Density
- Unknown
- Equilibrium temperature
- 348 K
- Starlight received
- 2.45 × Earth
- Orbital period
- 6.944 days
- Average distance from its star
- 0.0405 AU
Star
- Host star
- GJ 3988
- Spectral class
- M — red dwarf
- Surface temperature
- 3,273 K
- Radius
- 0.1973 × Sun
- Mass
- 0.1842 × Sun
- Age
- Unknown
System
- Distance from Earth
- 32.32 light-years (9.911 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2023
- Method
- Radial Velocity
- Facility
- Calar Alto Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.