Star · F0III
τ² Hyi
τ² Hyi is a giant star of spectral type F0III in the constellation Hydrus, 206.2 light-years from the Sun.
| Other names | HIP 8366 |
|---|---|
| Constellation | Hydrus |
| Distance | 206.2 light-years (63.2 pc) |
| Apparent magnitude | magnitude 6.05 |
| Absolute magnitude | magnitude 2.05 |
| Spectral type | F0III |
| Surface temperature | 7,230 K |
| Luminosity | 13 L☉ |
| Radius | 2.3 R☉ |
| Mass | 1.9 M☉ (estimated) |
| Right ascension (J2000) | 1h 47m 46.4s |
| Declination (J2000) | −80° 10′ 35″ |
| Space velocity (relative to the Sun) | 46.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.05). Visible from the whole Southern Hemisphere and north to latitude 10° N. South of latitude 10° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1820. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around τ² Hyi, the Sun would look like a star of magnitude 8.83, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 9191 7.82 light-years
- HIP 12654 13.6 light-years
- HIP 15803 14.4 light-years
- HIP 11972 15.0 light-years
- DENIS J0224120-763320 17.1 light-years
- HIP 12921 17.3 light-years
- HIP 8018 17.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.