GJ 422 b
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- GJ 422
- Distance from Earth
- 12.6631 pc (≈ 41.3 light-years)
- NASA planet type
- Neptune-like
- Radius (Earth = 1)
- 3.33
- Mass (Earth = 1)
- 11.07
- Orbital period
- 20.129 days
- Semi-major axis
- 0.111 AU
- Eccentricity
- 0.11
- Equilibrium temperature
- 292.68 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,014
- Discovery facility
- Multiple Observatories
- Host spectral type
- M3.5 V
- Host temperature
- 3,323 K
- Host radius (Sun = 1)
- 0.370328
- Host mass (Sun = 1)
- 0.35
- Host brightness
- 11.66 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 41 years to reach Earth — the light you see tonight left around AD 1985 (official distance ÷ speed of light).
- Its radius is about 3.3 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 20.1 Earth days — that is this planet's year.
Worked out from this object's official values.