Star · M5III
Tiaki
Tiaki is a giant star of spectral type M5III in the constellation Grus, 177.0 light-years from the Sun.
| Other names | β Gru · HIP 112122 |
|---|---|
| Constellation | Grus |
| Distance | 177.0 light-years (54.3 pc) |
| Apparent magnitude | magnitude 2.07 |
| Absolute magnitude | magnitude −1.60 |
| Spectral type | M5III |
| Surface temperature | 3,640 K |
| Luminosity | 1,730 L☉ |
| Radius | 105 R☉ |
| Mass | 7.64 M☉ (estimated) |
| Right ascension (J2000) | 22h 42m 40.1s |
| Declination (J2000) | −46° 53′ 04″ |
| Space velocity (relative to the Sun) | 34.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.07). Visible from the whole Southern Hemisphere and north to latitude 43° N. South of latitude 43° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1849. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around Tiaki, the Sun would look like a star of magnitude 8.50, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 111672 4.58 light-years
- HIP 111616 11.6 light-years
- HIP 113100 12.7 light-years
- HIP 113839 13.2 light-years
- HIP 110954 16.7 light-years
- HIP 113777 19.4 light-years
- HIP 113968 19.5 light-years
- HIP 114614 19.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.