Star · A
HIP 18339
HIP 18339 is a main-sequence star of spectral type A in the constellation Eridanus, 157.2 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 157.2 light-years (48.2 pc) |
| Apparent magnitude | magnitude 5.99 |
| Absolute magnitude | magnitude 2.57 |
| Spectral type | A |
| Surface temperature | 7,320 K |
| Luminosity | 8.02 L☉ |
| Radius | 1.76 R☉ |
| Mass | 1.68 M☉ (estimated) |
| Right ascension (J2000) | 3h 55m 16.1s |
| Declination (J2000) | −12° 05′ 57″ |
| Space velocity (relative to the Sun) | 31.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.99). Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1869. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around HIP 18339, the Sun would look like a star of magnitude 8.25, in the direction where our sky has the constellation Serpens. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 17903 7.87 light-years
- HIP 19016 11.4 light-years
- PSO J054.8149-11.7792 12.4 light-years
- HIP 19206 14.8 light-years
- SIMP J04173264-1345388 16.8 light-years
- SIMP J04210695-1133431 18.5 light-years
- HIP 18606 18.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.