Star · B8IV
φ Eri
φ Eri is a subgiant star of spectral type B8IV in the constellation Eridanus, 150.4 light-years from the Sun.
| Other names | HIP 10602 |
|---|---|
| Constellation | Eridanus |
| Distance | 150.4 light-years (46.1 pc) |
| Apparent magnitude | magnitude 3.56 |
| Absolute magnitude | magnitude 0.24 |
| Spectral type | B8IV |
| Surface temperature | 11,920 K |
| Luminosity | 129 L☉ |
| Radius | 2.66 R☉ |
| Mass | 3.64 M☉ (estimated) |
| Right ascension (J2000) | 2h 16m 30.6s |
| Declination (J2000) | −51° 30′ 44″ |
| Space velocity (relative to the Sun) | 23.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.56). Visible from the whole Southern Hemisphere and north to latitude 38° N. South of latitude 38° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1876. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around φ Eri, the Sun would look like a star of magnitude 8.15, in the direction where our sky has the constellation Boötes. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J02265658-5327032 6.58 light-years
- HIP 9685 10.0 light-years
- HIP 12517 10.7 light-years
- HIP 12767 11.3 light-years
- HIP 11071 11.5 light-years
- HIP 9892 12.8 light-years
- HD 13724 14.9 light-years
- HIP 11337 15.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.