GJ 357 b
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- GJ 357
- Distance from Earth
- 9.4418 pc (≈ 30.8 light-years)
- NASA planet type
- Super Earth
- Radius (Earth = 1)
- 1.2
- Mass (Earth = 1)
- 1.83
- Orbital period
- 3.9306 days
- Semi-major axis
- 0.036 AU
- Equilibrium temperature
- 518 K
- Discovery method
- Transit
- Discovery year
- 2,019
- Discovery facility
- Transiting Exoplanet Survey Satellite (TESS)
- Host spectral type
- M2.5 V
- Host temperature
- 3,505 K
- Host radius (Sun = 1)
- 0.337
- Host mass (Sun = 1)
- 0.342
- Host brightness
- 10.91 mag
Source:NASA Exoplanet Archive (Caltech/IPAC) · checked 2026-11-02 ↗NASA Science · checked 2026-11-02 ↗NASA Exoplanet Archive (Caltech/IPAC) · checked 2026-11-02 ↗
In everyday life
- Light from this object takes about 31 years to reach Earth — the light you see tonight left around AD 1995 (official distance ÷ speed of light).
- Its radius is about 1.2 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 3.9 Earth days — that is this planet's year.
Worked out from this object's official values.