HD 196885 A planetary system
HD 196885 A is a yellow-white main-sequence star of spectral type F8 V approximately 111 light-years from Earth (34.17 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- HD 196885 A
- Spectral type
- F8 V
- Effective temperature
- 6,254 K
- Mass
- 1.28 M☉ (solar masses)
- Radius
- 1.31 R☉ (solar radii)
- Distance
- 34.17 pc (111 ly)
- Hipparcos catalog
- HIP 101966
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| HD 196885 A b | Neptune-like | 819.97 | 13.20 | 1333.00 | 2.3700 | — | 2007 |
The planets in detail
HD 196885 A b is a Neptune-like world with about 13.20 Earth radii and 819.97 Earth masses. It orbits HD 196885 A at 2.3700 AU with a 3.6-Earth-year orbit, and no published equilibrium temperature. Its orbit is notably eccentric (e = 0.48), 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 HD 196885 A system was confirmed in 2007 using radial velocity (Doppler) measurements. Detection facilities: Haute-Provence Observatory.
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 309.9665°, declination 11.2500°. 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.
