eps Eri planetary system
eps Eri is an orange main-sequence star of spectral type K2 V approximately 10.4 light-years from Earth (3.20 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- eps Eri
- Spectral type
- K2 V
- Effective temperature
- 5,020 K
- Mass
- 0.82 M☉ (solar masses)
- Radius
- 0.76 R☉ (solar radii)
- Distance
- 3.20 pc (10.4 ly)
- Hipparcos catalog
- HIP 16537
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| eps Eri b | Neptune-like | 209.77 | 14.10 | 2671.00 | 3.5300 | — | 2000 |
The planets in detail
eps Eri b is a Neptune-like world with about 14.10 Earth radii and 209.77 Earth masses. It orbits eps Eri at 3.5300 AU with a 7.3-Earth-year orbit, and no published equilibrium temperature. It was confirmed in 2000 via radial velocity (Doppler) measurements.
Discovery
The single planet in the eps Eri system was confirmed in 2000 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 53.2284°, declination -9.4582°. 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.
