GJ 15 A b
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- GJ 15 A
- Distance from Earth
- 3.5623 pc (≈ 11.6 light-years)
- NASA planet type
- Super Earth
- Radius (Earth = 1)
- 1.55
- Mass (Earth = 1)
- 3.03
- Orbital period
- 11.4407 days
- Semi-major axis
- 0.072 AU
- Eccentricity
- 0.094
- Equilibrium temperature
- 550 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,014
- Discovery facility
- W. M. Keck Observatory
- Host spectral type
- M1
- Host temperature
- 3,607 K
- Host radius (Sun = 1)
- 0.38
- Host mass (Sun = 1)
- 0.38
- Host brightness
- 8.09 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 12 years to reach Earth — the light you see tonight left around AD 2014 (official distance ÷ speed of light).
- Its radius is about 1.6 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 11.4 Earth days — that is this planet's year.
Worked out from this object's official values.