Star · G6
τ¹ Hyi
τ¹ Hyi is a giant star of spectral type G6 in the constellation Hydrus, 376.6 light-years from the Sun.
| Other names | HIP 7879 |
|---|---|
| Constellation | Hydrus |
| Distance | 376.6 light-years (115.5 pc) |
| Apparent magnitude | magnitude 6.33 |
| Absolute magnitude | magnitude 1.02 |
| Spectral type | G6 |
| Surface temperature | 4,870 K |
| Luminosity | 48.9 L☉ |
| Radius | 9.81 R☉ |
| Mass | 2.76 M☉ (estimated) |
| Right ascension (J2000) | 1h 41m 21.5s |
| Declination (J2000) | −79° 08′ 54″ |
| Space velocity (relative to the Sun) | 34.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.33). Visible from the whole Southern Hemisphere and north to latitude 11° N. South of latitude 11° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1649. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.7 million years.
The Sun seen from there
From a planet around τ¹ Hyi, the Sun would look like a star of magnitude 10.14, in the direction where our sky has the constellation Ursa Minor. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.