Star · F1V
20 Dra
20 Dra is a main-sequence star of spectral type F1V in the constellation Draco, 218.6 light-years from the Sun.
| Other names | HIP 82898 |
|---|---|
| Constellation | Draco |
| Distance | 218.6 light-years (67.0 pc) |
| Apparent magnitude | magnitude 6.40 |
| Absolute magnitude | magnitude 2.27 |
| Spectral type | F1V |
| Surface temperature | 6,970 K |
| Luminosity | 10.5 L☉ |
| Radius | 2.22 R☉ |
| Mass | 1.8 M☉ (estimated) |
| Right ascension (J2000) | 16h 56m 25.3s |
| Declination (J2000) | +65° 02′ 21″ |
| Space velocity (relative to the Sun) | 25.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.40). Visible from the whole Northern Hemisphere and south to latitude 25° S. North of latitude 25° 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 1807. 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 20 Dra, the Sun would look like a star of magnitude 8.96, 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 80738 14.7 light-years
- HIP 85906 17.3 light-years
- 27 Dra 18.4 light-years
- HIP 79180 19.0 light-years
- HIP 86482 19.4 light-years
- HIP 86067 19.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.