11 Com planetary system
11 Com is a Sun-like main-sequence star of spectral type G8 III approximately 304 light-years from Earth (93.18 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- 11 Com
- Spectral type
- G8 III
- Effective temperature
- 4,874 K
- Mass
- 2.09 M☉ (solar masses)
- Radius
- 13.76 R☉ (solar radii)
- Distance
- 93.18 pc (304 ly)
- Hipparcos catalog
- HIP 60202
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| 11 Com b | Neptune-like | 4914.90 | 12.20 | 323.21 | 1.1780 | — | 2007 |
The planets in detail
11 Com b is a Neptune-like world with about 12.20 Earth radii and 4914.90 Earth masses. It orbits 11 Com at 1.1780 AU with a 323-day year, and no published equilibrium temperature. Its orbit is notably eccentric (e = 0.24), meaning the distance to its star — and the irradiation it receives — varies substantially over each year. It was confirmed in 2007 via radial velocity (Doppler) measurements.
Discovery
The single planet in the 11 Com system was confirmed in 2007 using radial velocity (Doppler) measurements. Detection facilities: Xinglong Station.
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 185.1788°, declination 17.7933°. 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.
