Star · K5III
Eltanin
Eltanin is a giant star of spectral type K5III in the constellation Draco, 154.3 light-years from the Sun.
| Other names | γ Dra · HIP 87833 |
|---|---|
| Constellation | Draco |
| Distance | 154.3 light-years (47.3 pc) |
| Apparent magnitude | magnitude 2.24 |
| Absolute magnitude | magnitude −1.13 |
| Spectral type | K5III |
| Surface temperature | 3,760 K |
| Luminosity | 933 L☉ |
| Radius | 71.9 R☉ |
| Mass | 6.41 M☉ (estimated) |
| Right ascension (J2000) | 17h 56m 36.4s |
| Declination (J2000) | +51° 29′ 20″ |
| Space velocity (relative to the Sun) | 28.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.24). Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° N 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 1872. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around Eltanin, the Sun would look like a star of magnitude 8.20, in the direction where our sky has the constellation Pictor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.