GJ 687 b
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- GJ 687
- Distance from Earth
- 4.5494 pc (≈ 14.8 light-years)
- NASA planet type
- Neptune-like
- Radius (Earth = 1)
- 4.32
- Mass (Earth = 1)
- 17.2
- Orbital period
- 38.142 days
- Semi-major axis
- 0.163 AU
- Eccentricity
- 0.17
- Equilibrium temperature
- 263.65 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,014
- Discovery facility
- Lick Observatory
- Host spectral type
- M3.0V
- Host temperature
- 3,413 K
- Host radius (Sun = 1)
- 0.4183
- Host mass (Sun = 1)
- 0.4
- Host brightness
- 9.15 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 15 years to reach Earth — the light you see tonight left around AD 2011 (official distance ÷ speed of light).
- Its radius is about 4.3 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 38.1 Earth days — that is this planet's year.
Worked out from this object's official values.