Star · G9III
Altais
Altais is a giant star of spectral type G9III in the constellation Draco, 97.8 light-years from the Sun.
| Other names | δ Dra · HIP 94376 |
|---|---|
| Constellation | Draco |
| Distance | 97.8 light-years (30.0 pc) |
| Apparent magnitude | magnitude 3.07 |
| Absolute magnitude | magnitude 0.69 |
| Spectral type | G9III |
| Surface temperature | 4,770 K |
| Luminosity | 70.3 L☉ |
| Radius | 12.3 R☉ |
| Mass | 3.06 M☉ (estimated) |
| Right ascension (J2000) | 19h 12m 33.3s |
| Declination (J2000) | +67° 39′ 41″ |
| Space velocity (relative to the Sun) | 31.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.07). Visible from the whole Northern Hemisphere and south to latitude 22° S. North of latitude 22° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around Altais, the Sun would look like a star of magnitude 7.21, in the direction where our sky has the constellation Volans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J291.2688+68.5310 4.17 light-years
- WISE J191359.78+644456.6 4.98 light-years
- WISEPA J184124.74+700038.0 6.93 light-years
- TOI-1452 9.74 light-years
- HIP 89005 11.6 light-years
- WISEA J201204.11+672608.0 14.1 light-years
- HIP 87457 14.6 light-years
- WISE J195436.15+691541.3 14.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.