eps Tau planetary system
eps Tau is an orange main-sequence star of spectral type K0 III approximately 155 light-years from Earth (47.53 parsecs). It hosts 1 confirmed exoplanet.
Host star
- Name
- eps Tau
- Spectral type
- K0 III
- Effective temperature
- 4,877 K
- Mass
- 2.57 M☉ (solar masses)
- Radius
- 12.35 R☉ (solar radii)
- Distance
- 47.53 pc (155 ly)
- Hipparcos catalog
- HIP 20889
Confirmed planets (1)
| Planet | Class | Mass (M⊕) | Radius (R⊕) | Period (d) | Distance (AU) | Eq. temp (K) | Discovered |
|---|---|---|---|---|---|---|---|
| eps Tau b | Neptune-like | 2285.19 | 12.70 | 585.82 | 1.8780 | — | 2006 |
The planets in detail
eps Tau b is a Neptune-like world with about 12.70 Earth radii and 2285.19 Earth masses. It orbits eps Tau at 1.8780 AU with a 586-day year, and no published equilibrium temperature. It was confirmed in 2006 via radial velocity (Doppler) measurements.
Discovery
The single planet in the eps Tau system was confirmed in 2006 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 67.1547°, declination 19.1803°. 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.
