Star · G8II
HIP 81289
HIP 81289 is a bright giant star of spectral type G8II in the constellation Hercules, 842.6 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 842.6 light-years (258.3 pc) |
| Apparent magnitude | magnitude 5.83 |
| Absolute magnitude | magnitude −1.23 |
| Spectral type | G8II |
| Surface temperature | 4,640 K |
| Luminosity | 443 L☉ |
| Radius | 32.6 R☉ |
| Mass | 5.18 M☉ (estimated) |
| Right ascension (J2000) | 16h 36m 11.2s |
| Declination (J2000) | +46° 36′ 48″ |
| Space velocity (relative to the Sun) | 22.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.83). Visible from the whole Northern Hemisphere and south to latitude 43° S. North of latitude 43° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1183. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around HIP 81289, the Sun would look like a star of magnitude 11.89, in the direction where our sky has the constellation Pictor. 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.