Star · M1III
π¹ Hyi
π¹ Hyi is a giant star of spectral type M1III in the constellation Hydrus, 714.2 light-years from the Sun.
| Other names | HIP 10418 |
|---|---|
| Constellation | Hydrus |
| Distance | 714.2 light-years (219.0 pc) |
| Apparent magnitude | magnitude 5.57 |
| Absolute magnitude | magnitude −1.13 |
| Spectral type | M1III |
| Surface temperature | 3,710 K |
| Luminosity | 1,000 L☉ |
| Radius | 76.5 R☉ |
| Mass | 6.54 M☉ (estimated) |
| Right ascension (J2000) | 2h 14m 14.5s |
| Declination (J2000) | −67° 50′ 29″ |
| Space velocity (relative to the Sun) | 65.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.57). Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° 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 1312. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around π¹ Hyi, the Sun would look like a star of magnitude 11.53, 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.