Star · K0III
27 Dra
27 Dra is a giant star of spectral type K0III in the constellation Draco, 222.4 light-years from the Sun.
| Other names | HIP 85805 |
|---|---|
| Constellation | Draco |
| Distance | 222.4 light-years (68.2 pc) |
| Apparent magnitude | magnitude 5.07 |
| Absolute magnitude | magnitude 0.90 |
| Spectral type | K0III |
| Surface temperature | 4,570 K |
| Luminosity | 65.2 L☉ |
| Radius | 12.9 R☉ |
| Mass | 3 M☉ (estimated) |
| Right ascension (J2000) | 17h 31m 57.9s |
| Declination (J2000) | +68° 08′ 06″ |
| Space velocity (relative to the Sun) | 85.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.07). 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 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 1804. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around 27 Dra, the Sun would look like a star of magnitude 9.00, in the direction where our sky has the constellation Dorado. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 85906 3.80 light-years
- HIP 86067 16.5 light-years
- HIP 86568 17.0 light-years
- HIP 86482 17.6 light-years
- 20 Dra 18.4 light-years
- HIP 88071 19.4 light-years
- HIP 88062 19.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.