Star · A0
HIP 90991
HIP 90991 is a main-sequence star of spectral type A0 in the constellation Scutum, 240.1 light-years from the Sun.
| Constellation | Scutum |
|---|---|
| Distance | 240.1 light-years (73.6 pc) |
| Apparent magnitude | magnitude 5.74 |
| Absolute magnitude | magnitude 1.41 |
| Spectral type | A0 |
| Surface temperature | 9,620 K |
| Luminosity | 30.4 L☉ |
| Radius | 1.99 R☉ |
| Mass | 2.41 M☉ (estimated) |
| Right ascension (J2000) | 18h 33m 39.0s |
| Declination (J2000) | −14° 51′ 13″ |
| Space velocity (relative to the Sun) | 19.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.74). Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° 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 1786. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around HIP 90991, the Sun would look like a star of magnitude 9.16, 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 91280 8.80 light-years
- HIP 91314 11.3 light-years
- HIP 90788 13.4 light-years
- HIP 91089 18.8 light-years
- HIP 91530 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.