gam Cep planetary system
gam Cep is an orange main-sequence star of spectral type K1 III-IV approximately 46.0 light-years from Earth (14.10 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- gam Cep
- Spectral type
- K1 III-IV
- Effective temperature
- 4,775 K
- Mass
- 1.27 M☉ (solar masses)
- Radius
- 4.74 R☉ (solar radii)
- Distance
- 14.10 pc (46.0 ly)
- Hipparcos catalog
- HIP 116727
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| gam Cep b | Neptune-like | 2097.67 | 12.70 | 913.00 | 2.1300 | — | 2003 |
The planets in detail
gam Cep b is a Neptune-like world with about 12.70 Earth radii and 2097.67 Earth masses. It orbits gam Cep at 2.1300 AU with a 2.5-Earth-year orbit, and no published equilibrium temperature. It was confirmed in 2003 via radial velocity (Doppler) measurements.
Discovery
The single planet in the gam Cep system was confirmed in 2003 using radial velocity (Doppler) measurements. Detection facilities: Multiple Observatories.
Observing from Earth
Exoplanets cannot be resolved visually with amateur telescopes — the host star's glare is overwhelming and even space-based direct imaging requires sophisticated coronagraphs. What you can observe is the host star itself at right ascension 354.8358°, declination 77.6331°. Use the 3D orrery above to inspect orbital geometry, planetary scale, and the habitable-zone overlay — the orbits are computed from the published Keplerian elements and animate at user-controlled time rates.
