Star · B1III
Alniyat
Alniyat is a giant star of spectral type B1III in the constellation Scorpius, 696.9 light-years from the Sun.
| Other names | σ Sco · HIP 80112 |
|---|---|
| Constellation | Scorpius |
| Distance | 696.9 light-years (213.7 pc) |
| Apparent magnitude | magnitude 2.90 |
| Absolute magnitude | magnitude −3.75 |
| Spectral type | B1III |
| Surface temperature | 7,470 K |
| Luminosity | 2,740 L☉ |
| Radius | 31.2 R☉ |
| Mass | 8.71 M☉ (estimated) |
| Right ascension (J2000) | 16h 21m 11.3s |
| Declination (J2000) | −25° 35′ 34″ |
| Space velocity (relative to the Sun) | 19.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.90). Visible from the whole Southern Hemisphere and north to latitude 64° N. South of latitude 64° S 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 1329. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around Alniyat, the Sun would look like a star of magnitude 11.48, in the direction where our sky has the constellation Taurus. 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.