Star · B8III
HIP 91405
HIP 91405 is a giant star of spectral type B8III in the constellation Sagittarius, 719.3 light-years from the Sun.
| Constellation | Sagittarius |
|---|---|
| Distance | 719.3 light-years (220.5 pc) |
| Apparent magnitude | magnitude 5.78 |
| Absolute magnitude | magnitude −0.94 |
| Spectral type | B8III |
| Surface temperature | 10,360 K |
| Luminosity | 295 L☉ |
| Radius | 5.34 R☉ |
| Mass | 4.61 M☉ (estimated) |
| Right ascension (J2000) | 18h 38m 30.7s |
| Declination (J2000) | −23° 30′ 18″ |
| Space velocity (relative to the Sun) | 39.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.78). Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1307. 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 HIP 91405, the Sun would look like a star of magnitude 11.55, in the direction where our sky has the constellation Gemini. 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.