Star · K0III
ι Gru
ι Gru is a giant star of spectral type K0III in the constellation Grus, 205.7 light-years from the Sun.
| Other names | HIP 114421 |
|---|---|
| Constellation | Grus |
| Distance | 205.7 light-years (63.1 pc) |
| Apparent magnitude | magnitude 3.88 |
| Absolute magnitude | magnitude −0.12 |
| Spectral type | K0III |
| Surface temperature | 4,750 K |
| Luminosity | 149 L☉ |
| Radius | 18 R☉ |
| Mass | 3.8 M☉ (estimated) |
| Right ascension (J2000) | 23h 10m 21.5s |
| Declination (J2000) | −45° 14′ 48″ |
| Space velocity (relative to the Sun) | 42.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.88). Visible from the whole Southern Hemisphere and north to latitude 45° N. South of latitude 45° S it never sets. It stands highest at midnight in September, the best time to observe it.
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 3.6 million years.
The Sun seen from there
From a planet around ι Gru, the Sun would look like a star of magnitude 8.83, 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 114040 9.86 light-years
- HIP 114967 9.98 light-years
- HIP 113040 11.0 light-years
- HIP 113422 14.1 light-years
- HIP 116045 15.1 light-years
- HIP 114328 18.5 light-years
- HIP 113126 18.6 light-years
- HIP 116602 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.