Star · K2III
HIP 108102
HIP 108102 is a giant star of spectral type K2III in the constellation Aquarius, 291.1 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 291.1 light-years (89.2 pc) |
| Apparent magnitude | magnitude 5.71 |
| Absolute magnitude | magnitude 0.96 |
| Spectral type | K2III |
| Surface temperature | 4,340 K |
| Luminosity | 73.3 L☉ |
| Radius | 15.2 R☉ |
| Mass | 3.1 M☉ (estimated) |
| Right ascension (J2000) | 21h 54m 10.4s |
| Declination (J2000) | −4° 16′ 34″ |
| Space velocity (relative to the Sun) | 63.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.71). Visible from the whole Southern Hemisphere and north to latitude 86° N. 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 1735. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.2 million years.
The Sun seen from there
From a planet around HIP 108102, the Sun would look like a star of magnitude 9.58, in the direction where our sky has the constellation Sextans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 107906 10.7 light-years
- HIP 108459 19.3 light-years
- HIP 108898 19.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.