xi Aql planetary system
xi Aql is an orange main-sequence star of spectral type K0 III approximately 183 light-years from Earth (56.19 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- xi Aql
- Spectral type
- K0 III
- Effective temperature
- 4,841 K
- Mass
- 1.74 M☉ (solar masses)
- Radius
- 10.86 R☉ (solar radii)
- Distance
- 56.19 pc (183 ly)
- Hipparcos catalog
- HIP 97938
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| xi Aql b | Neptune-like | 616.90 | 13.40 | 136.97 | 0.6250 | — | 2007 |
The planets in detail
xi Aql b is a Neptune-like world with about 13.40 Earth radii and 616.90 Earth masses. It orbits xi Aql at 0.6250 AU with a 137-day year, and no published equilibrium temperature. It was confirmed in 2007 via radial velocity (Doppler) measurements.
Discovery
The single planet in the xi Aql system was confirmed in 2007 using radial velocity (Doppler) measurements. Detection facilities: Okayama Astrophysical 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 298.5624°, declination 8.4611°. 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.
