Star · B9
HIP 90806
HIP 90806 is a main-sequence star of spectral type B9 in the constellation Sagittarius, 210.1 light-years from the Sun.
| Constellation | Sagittarius |
|---|---|
| Distance | 210.1 light-years (64.4 pc) |
| Apparent magnitude | magnitude 5.12 |
| Absolute magnitude | magnitude 1.08 |
| Spectral type | B9 |
| Surface temperature | 9,930 K |
| Luminosity | 43.3 L☉ |
| Radius | 2.22 R☉ |
| Mass | 2.67 M☉ (estimated) |
| Right ascension (J2000) | 18h 31m 26.3s |
| Declination (J2000) | −18° 24′ 10″ |
| Space velocity (relative to the Sun) | 29.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.12). Visible from the whole Southern Hemisphere and north to latitude 72° N. South of latitude 72° 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 1816. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around HIP 90806, the Sun would look like a star of magnitude 8.87, in the direction where our sky has the constellation Gemini. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 91581 10.6 light-years
- HIP 91864 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.