GJ 3942 b
A confirmed exoplanet orbiting GJ 3942.
Compared with Earth
- Mass
- About 7.1 times Earth's mass.
- Temperature
- About 317 °C (602 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 6.9 Earth days.
Planet
- Radius
- Unknown
- Mass
- 7.14 × Earth
- Density
- Unknown
- Equilibrium temperature
- 590 K
- Starlight received
- Unknown
- Orbital period
- 6.905 days
- Average distance from its star
- 0.0608 AU
Star
- Host star
- GJ 3942
- Spectral class
- M — red dwarf
- Surface temperature
- 3,867 K
- Radius
- 0.61 × Sun
- Mass
- 0.63 × Sun
- Age
- Unknown
System
- Distance from Earth
- 55.21 light-years (16.93 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Radial Velocity
- Facility
- Roque de los Muchachos Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.