HD 86728 planetary system
HD 86728 is a Sun-like main-sequence star of spectral type G1V approximately 48.7 light-years from Earth (14.92 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- HD 86728
- Spectral type
- G1V
- Effective temperature
- 5,610 K
- Mass
- 0.97 M☉ (solar masses)
- Radius
- 1.24 R☉ (solar radii)
- Distance
- 14.92 pc (48.7 ly)
- Hipparcos catalog
- HIP 49081
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| HD 86728 b | Mini-Neptune | 9.43 | 3.03 | 31.15 | 0.1916 | — | 2025 |
The planets in detail
HD 86728 b is a Mini-Neptune with about 3.03 Earth radii and 9.43 Earth masses. It orbits HD 86728 at 0.1916 AU with a 31.2-day year, and no published equilibrium temperature. It was confirmed in 2025 via radial velocity (Doppler) measurements.
Discovery
The single planet in the HD 86728 system was confirmed in 2025 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 150.2501°, declination 31.9218°. 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.
