Star · F3V
39 Aur
39 Aur is a main-sequence star of spectral type F3V in the constellation Auriga, 162.3 light-years from the Sun.
| Other names | HIP 28823 |
|---|---|
| Constellation | Auriga |
| Distance | 162.3 light-years (49.8 pc) |
| Apparent magnitude | magnitude 5.90 |
| Absolute magnitude | magnitude 2.42 |
| Spectral type | F3V |
| Surface temperature | 7,110 K |
| Luminosity | 9.22 L☉ |
| Radius | 2 R☉ |
| Mass | 1.74 M☉ (estimated) |
| Right ascension (J2000) | 6h 05m 03.4s |
| Declination (J2000) | +42° 58′ 54″ |
| Space velocity (relative to the Sun) | 46.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.90). Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1864. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.9 million years.
The Sun seen from there
From a planet around 39 Aur, the Sun would look like a star of magnitude 8.31, in the direction where our sky has the constellation Corona Australis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 31451 16.7 light-years
- Mahasim 17.1 light-years
- HIP 29814 17.3 light-years
- Lucilinburhuc 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.