55 Cnc B b
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- 55 Cnc B
- Distance from Earth
- 12.4773 pc (≈ 40.7 light-years)
- NASA planet type
- Super Earth
- Radius (Earth = 1)
- 1.69
- Mass (Earth = 1)
- 3.5
- Orbital period
- 6.7994 days
- Semi-major axis
- 0.044 AU
- Eccentricity
- 0
- Equilibrium temperature
- 395.41 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,025
- Discovery facility
- Mauna Kea Observatory
- Host spectral type
- M4.5 V
- Host temperature
- 3,286 K
- Host radius (Sun = 1)
- 0.274
- Host mass (Sun = 1)
- 0.26
- Host brightness
- 13.152 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 1.7 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 6.8 Earth days — that is this planet's year.
Worked out from this object's official values.