HD 59686 A planetary system
HD 59686 A is an orange main-sequence star of spectral type K2 III approximately 291 light-years from Earth (89.27 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- HD 59686 A
- Spectral type
- K2 III
- Effective temperature
- 4,658 K
- Mass
- 1.90 M☉ (solar masses)
- Radius
- 13.20 R☉ (solar radii)
- Distance
- 89.27 pc (291 ly)
- Hipparcos catalog
- HIP 36616
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| HD 59686 A b | Neptune-like | 2199.38 | 12.70 | 299.36 | 1.0860 | — | 2016 |
The planets in detail
HD 59686 A b is a Neptune-like world with about 12.70 Earth radii and 2199.38 Earth masses. It orbits HD 59686 A at 1.0860 AU with a 299-day year, and no published equilibrium temperature. It was confirmed in 2016 via radial velocity (Doppler) measurements.
Discovery
The single planet in the HD 59686 A system was confirmed in 2016 using radial velocity (Doppler) measurements. Detection facilities: Lick 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 112.9519°, declination 17.0857°. 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.
