Star · A9IV
ω Eri
ω Eri is a subgiant star of spectral type A9IV in the constellation Eridanus, 218.4 light-years from the Sun.
| Other names | HIP 22701 |
|---|---|
| Constellation | Eridanus |
| Distance | 218.4 light-years (67.0 pc) |
| Apparent magnitude | magnitude 4.36 |
| Absolute magnitude | magnitude 0.23 |
| Spectral type | A9IV |
| Surface temperature | 7,750 K |
| Luminosity | 71.4 L☉ |
| Radius | 4.69 R☉ |
| Mass | 3.07 M☉ (estimated) |
| Right ascension (J2000) | 4h 52m 53.7s |
| Declination (J2000) | −5° 27′ 10″ |
| Space velocity (relative to the Sun) | 11.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.36). Visible from the whole Southern Hemisphere and north to latitude 85° N. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1808. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around ω Eri, the Sun would look like a star of magnitude 8.96, in the direction where our sky has the constellation Ophiuchus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 22206 10.2 light-years
- HIP 22151 14.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.