GJ 357 c
A confirmed exoplanet orbiting GJ 357.
Compared with Earth
- Mass
- About 3.4 times Earth's mass.
- Temperature
- About 128 °C (262 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 4.5 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 9.1 Earth days.
Planet
- Radius
- Unknown
- Mass
- 3.4 × Earth
- Density
- Unknown
- Equilibrium temperature
- 401.2 K
- Starlight received
- 4.45 × Earth
- Orbital period
- 9.125 days
- Average distance from its star
- 0.061 AU
Star
- Host star
- GJ 357
- Spectral class
- M — red dwarf
- Surface temperature
- 3,505 K
- Radius
- 0.337 × Sun
- Mass
- 0.342 × Sun
- Age
- Unknown
System
- Distance from Earth
- 30.8 light-years (9.442 parsecs)
- Stars in system
- 1
- Known planets
- 3
Discovery
- Year
- 2019
- Method
- Radial Velocity
- Facility
- Multiple Observatories
Data from the NASA Exoplanet Archive, synced October 14, 2026.